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  • Oxford University Press  (36,494)
  • American Institute of Physics (AIP)  (26,481)
  • American Association for the Advancement of Science (AAAS)
  • 2000-2004  (74,636)
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  • 101
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    Jupiter's atmospheric composition from the Cassini thermal infrared spectroscopy experiment (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-21
    Description: The Composite Infrared Spectrometer observed Jupiter in the thermal infrared during the swing-by of the Cassini spacecraft. Results include the detection of two new stratospheric species, the methyl radical and diacetylene, gaseous species present in the north and south auroral infrared hot spots; determination of the variations with latitude of acetylene and ethane, the latter a tracer of atmospheric motion; observations of unexpected spatial distributions of carbon dioxide and hydrogen cyanide, both considered to be products of comet Shoemaker-Levy 9 impacts; characterization of the morphology of the auroral infrared hot spot acetylene emission; and a new evaluation of the energetics of the northern auroral infrared hot spot.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kunde, V G -- Flasar, F M -- Jennings, D E -- Bezard, B -- Strobel, D F -- Conrath, B J -- Nixon, C A -- Bjoraker, G L -- Romani, P N -- Achterberg, R K -- Simon-Miller, A A -- Irwin, P -- Brasunas, J C -- Pearl, J C -- Smith, M D -- Orton, G S -- Gierasch, P J -- Spilker, L J -- Carlson, R C -- Mamoutkine, A A -- Calcutt, S B -- Read, P L -- Taylor, F W -- Fouchet, T -- Parrish, P -- Barucci, A -- Courtin, R -- Coustenis, A -- Gautier, D -- Lellouch, E -- Marten, A -- Prange, R -- Biraud, Y -- Ferrari, C -- Owen, T C -- Abbas, M M -- Samuelson, R E -- Raulin, F -- Ade, P -- Cesarsky, C J -- Grossman, K U -- Coradini, A -- New York, N.Y. -- Science. 2004 Sep 10;305(5690):1582-6. Epub 2004 Aug 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Astronomy, University of Maryland, College Park, MD 20742, USA. Virgil.G.Kunde.1@gsfc.nasa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15319491" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylene ; Atmosphere ; *Carbon Dioxide ; Ethane ; Extraterrestrial Environment ; *Hydrocarbons ; *Hydrogen Cyanide ; *Jupiter ; Spacecraft ; Spectrum Analysis ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 102
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    The carbon conundrum (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2004 Aug 13;305(5686):962-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15310886" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 103
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    American Astronomical Society meeting. Snapshots from the meeting (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Irion, Robert -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):461.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739438" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 104
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    Middle East. X-ray source produces a glimmer of hope (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Nov 26;306(5701):1465.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15567830" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 105
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    An ab initio molecular dynamics study of the aqueous liquid-vapor interface (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-31
    Description: We present an ab initio molecular dynamics simulation of the aqueous liquid-vapor interface. Having successfully stabilized a region of bulk water in the center of a water slab, we were able to reproduce and further quantify the experimentally observed abundance of surface "acceptor-only"(19%) and "single-donor"(66%) moieties as well as substantial surface relaxation approaching the liquid-vapor interface. Examination of the orientational dynamics points to a faster relaxation in the interfacial region. Furthermore, the average value of the dipole decreases and the average value of the highest occupied molecular orbital for each water molecule increases approaching the liquid-vapor interface. Our results support the idea that the surface contains, on average, far more reactive states than the bulk.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuo, I-Feng W -- Mundy, Christopher J -- New York, N.Y. -- Science. 2004 Jan 30;303(5658):658-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Computational Chemical Biology, Chemistry and Materials Science L-091, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14752157" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 106
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    7th International Congress on Vertebrate Morphology meeting. Tiny salamanders show their teeth (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Sep 3;305(5689):1396-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15353775" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Skull/anatomy & histology ; *Tooth ; Urodela/*anatomy & histology/*classification/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 107
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    Old World fossil record of modern-type hummingbirds (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-08
    Description: I report on tiny skeletons of stem-group hummingbirds from the early Oligocene of Germany that are of essentially modern appearance and exhibit morphological specializations toward nectarivory and hovering flight. These are the oldest fossils of modern-type hummingbirds, which had not previously been reported from the Old World. The findings demonstrate that early hummingbird evolution was not restricted to the New World. They further suggest that bird-flower coevolution dates back to the early Oligocene and open another view on the origin of ornithophily in Old World plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayr, Gerald -- New York, N.Y. -- Science. 2004 May 7;304(5672):861-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Forschungsinstitut Senckenberg, Division of Ornithology, Senckenberganlage 25, D-60325 Frankfurt a.M., Germany. Gerald.Mayr@senckenberg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15131303" target="_blank"〉PubMed〈/a〉
    Keywords: Americas ; Animals ; *Biological Evolution ; *Birds/anatomy & histology/classification ; Bone and Bones/anatomy & histology ; Europe ; Flight, Animal ; Flowers ; *Fossils ; Germany
    Print ISSN: 0036-8075
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  • 108
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    Cell biology. "Pumping" iron: the proteins (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beutler, Ernest -- New York, N.Y. -- Science. 2004 Dec 17;306(5704):2051-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA 92037, USA. beutler@scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15604397" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antimicrobial Cationic Peptides/*metabolism ; Biological Transport ; Cation Transport Proteins/genetics/*metabolism ; Enterocytes/metabolism ; Erythropoiesis ; Erythropoietin/genetics/metabolism ; Gene Expression Regulation ; Hemochromatosis/genetics ; Hepatocytes/metabolism ; Hepcidins ; Histocompatibility Antigens Class I/genetics ; Homeostasis ; Iron/*metabolism ; Iron Regulatory Protein 1/*metabolism ; Iron Regulatory Protein 2/*metabolism ; Membrane Proteins/genetics ; Mice ; Models, Biological ; Mutation ; Nitric Oxide/metabolism ; Oxygen/physiology ; Response Elements ; Signal Transduction ; Transcription, Genetic
    Print ISSN: 0036-8075
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  • 109
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    Natural history museums. Museums that made a master (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-07-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Jul 2;305(5680):37.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15232086" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Awards and Prizes ; Berlin ; *Biological Evolution ; Biology/history ; Birds ; History, 20th Century ; History, 21st Century ; Museums/*history ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 110
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    Nobel Prizes. Gold medal from cellular trash (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Oct 15;306(5695):400-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15486272" target="_blank"〉PubMed〈/a〉
    Keywords: Cysteine Endopeptidases/metabolism ; History, 20th Century ; History, 21st Century ; Israel ; Multienzyme Complexes/metabolism ; *Nobel Prize ; Proteasome Endopeptidase Complex ; Proteins/*metabolism ; Ubiquitin/*metabolism ; United States
    Print ISSN: 0036-8075
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  • 111
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    Materials Research Society meeting. Sushi-like discs give inside view of elusive membrane proteins (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2004 Apr 30;304(5671):674.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15118140" target="_blank"〉PubMed〈/a〉
    Keywords: Crystallization ; *Lipid Bilayers ; Membrane Proteins/*chemistry/metabolism ; *Nanotechnology ; *Phospholipids/chemistry ; Receptors, Adrenergic, beta-2/chemistry/metabolism ; Receptors, G-Protein-Coupled/*chemistry/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 112
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    Critical-like phenomena associated with liquid-liquid transition in a molecular liquid (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-30
    Description: Contrary to the conventional wisdom that there is only one unique liquid state for any material, recent evidence suggests that there can be more than two liquid states even for a single-component substance. The transition between these liquid states is called a liquid-liquid phase transition. We report the detailed experimental investigation on the kinetics of the continuous spinodal-decomposition-type transformation of one liquid into another for triphenyl phosphite. From the analysis of the linear regime, we found that the correlation length, xi, of fluctuations of the relevant order parameter diverges as xi = xi(0)[(T(SD) - T)/T(SD)](-nu) (where xi(0) = 60 nm and nu = 0.5) while approaching the spinodal temperature, T(SD). This is an indication of a critical-like anomaly associated with the liquid-liquid transition. We also revealed that the order parameter governing the liquid-liquid transition must be of a nonconserved nature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kurita, Rei -- Tanaka, Hajime -- New York, N.Y. -- Science. 2004 Oct 29;306(5697):845-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15514150" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 113
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    Chemistry. The modest undressing of a silicon center (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertrand, Guy -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):783-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UCR-CNRS Joint Research Chemistry Laboratory (UMR 2282), Department of Chemistry, University of California, Riverside, CA 92521, USA. gbertran@mail.ucr.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297652" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 114
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    American Astronomical Society meeting. Star formation--an extreme sport? (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Irion, Robert -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):460-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739436" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 115
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    Acetylation by Tip60 is required for selective histone variant exchange at DNA lesions (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-06
    Description: Phosphorylation of the human histone variant H2A.X and H2Av, its homolog in Drosophila melanogaster, occurs rapidly at sites of DNA double-strand breaks. Little is known about the function of this phosphorylation or its removal during DNA repair. Here, we demonstrate that the Drosophila Tip60 (dTip60) chromatin-remodeling complex acetylates nucleosomal phospho-H2Av and exchanges it with an unmodified H2Av. Both the histone acetyltransferase dTip60 as well as the adenosine triphosphatase Domino/p400 catalyze the exchange of phospho-H2Av. Thus, these data reveal a previously unknown mechanism for selective histone exchange that uses the concerted action of two distinct chromatin-remodeling enzymes within the same multiprotein complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kusch, Thomas -- Florens, Laurence -- Macdonald, W Hayes -- Swanson, Selene K -- Glaser, Robert L -- Yates, John R 3rd -- Abmayr, Susan M -- Washburn, Michael P -- Workman, Jerry L -- New York, N.Y. -- Science. 2004 Dec 17;306(5704):2084-7. Epub 2004 Nov 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stowers Institute for Medical Research, 1000 East 50th Street, Kansas City, MO 64110, USA. tnk@stowers-institute.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528408" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyl Coenzyme A/metabolism ; Acetylation ; Acetyltransferases/genetics/*metabolism ; Adenosine Triphosphatases/metabolism ; Animals ; Cell Line ; *DNA Damage ; DNA Repair ; Dimerization ; Drosophila Proteins/genetics/metabolism ; Drosophila melanogaster/embryology/genetics/*metabolism ; Embryo, Nonmammalian/metabolism ; Histone Acetyltransferases ; Histones/*metabolism ; Multiprotein Complexes/*metabolism ; Nucleosomes/*metabolism ; Phosphorylation ; RNA Interference ; Recombinant Proteins/metabolism ; Transcription Factors/metabolism
    Print ISSN: 0036-8075
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  • 116
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    Materials Research Society meeting. Printable electronics that stick around (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2004 Apr 30;304(5671):675.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15118142" target="_blank"〉PubMed〈/a〉
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  • 117
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    European Union. New research commissioner caught in controversy's wake (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-11-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Nov 5;306(5698):959.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528417" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 118
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    Fragmentation in massive star formation (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-02-21
    Description: Studies of evolved massive stars indicate that they form in a clustered mode. During the earliest evolutionary stages, these regions are embedded within their natal cores. Here we present high-spatial-resolution interferometric dust continuum observations disentangling the cluster-like structure of a young massive star-forming region. The derived protocluster mass distribution is consistent with the stellar initial mass function. Thus, fragmentation of the initial massive cores may determine the initial mass function and the masses of the final stars. This implies that stars of all masses can form via accretion processes, and coalescence of intermediate-mass protostars appears not to be necessary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beuther, Henrik -- Schilke, Peter -- New York, N.Y. -- Science. 2004 Feb 20;303(5661):1167-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA. hbeuther@cfa.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14976307" target="_blank"〉PubMed〈/a〉
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  • 119
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    Separate neural systems value immediate and delayed monetary rewards (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-10-16
    Description: When humans are offered the choice between rewards available at different points in time, the relative values of the options are discounted according to their expected delays until delivery. Using functional magnetic resonance imaging, we examined the neural correlates of time discounting while subjects made a series of choices between monetary reward options that varied by delay to delivery. We demonstrate that two separate systems are involved in such decisions. Parts of the limbic system associated with the midbrain dopamine system, including paralimbic cortex, are preferentially activated by decisions involving immediately available rewards. In contrast, regions of the lateral prefrontal cortex and posterior parietal cortex are engaged uniformly by intertemporal choices irrespective of delay. Furthermore, the relative engagement of the two systems is directly associated with subjects' choices, with greater relative fronto-parietal activity when subjects choose longer term options.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McClure, Samuel M -- Laibson, David I -- Loewenstein, George -- Cohen, Jonathan D -- AG05842/AG/NIA NIH HHS/ -- MH065214/MH/NIMH NIH HHS/ -- MH132804/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2004 Oct 15;306(5695):503-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology and Center for the Study of Brain, Mind, and Behavior, Princeton University, Princeton, NJ 08544, USA. smcclure@princeton.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15486304" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Basal Ganglia/physiology ; Brain Mapping ; *Decision Making ; Dopamine/physiology ; Female ; Frontal Lobe/physiology ; Humans ; Limbic System/*physiology ; Magnetic Resonance Imaging ; Male ; Parietal Lobe/*physiology ; Prefrontal Cortex/*physiology ; *Reward ; Time Factors
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    The next step for Kennewick Man (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McManamon, Francis P -- New York, N.Y. -- Science. 2004 Oct 22;306(5696):612-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15498995" target="_blank"〉PubMed〈/a〉
    Keywords: *Bone and Bones ; Humans ; *Paleontology ; *Research Design ; Skeleton ; United States
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    Orphan drugs of the future? (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2004 Mar 19;303(5665):1798.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15031491" target="_blank"〉PubMed〈/a〉
    Keywords: *Anti-Bacterial Agents ; *Biomedical Research ; Drug Approval ; *Drug Industry/economics ; Economics, Pharmaceutical ; Patents as Topic ; United States ; United States Food and Drug Administration
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    Functional anatomy of the attentional modulation of time estimation (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-06
    Description: Attention modulates our subjective perception of time. The less we attend to an event's duration, the shorter it seems to last. Attention to time or color stimulus attributes was modulated parametrically in an event-related functional magnetic resonance imaging study. Linear increases in task performance were accompanied by corresponding increases in brain activity. Increasing attention to time selectively increased activity in a corticostriatal network, including pre-supplementary motor area and right frontal operculum. Increasing attention to color selectively increased activity in area V4. By identifying areas whose activity was specifically modulated by attention to time, we have defined the core neuroanatomical substrates of timing behavior.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coull, Jennifer T -- Vidal, Franck -- Nazarian, Bruno -- Macar, Francoise -- New York, N.Y. -- Science. 2004 Mar 5;303(5663):1506-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Neurobiologie de la Cognition, Centre National de la Recherche Scientifique (CNRS), 31 Chemin Joseph-Aiguier, 13402 Marseille Cedex 20, France. jcoull@lnf.cnrs-mrs.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15001776" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; *Attention ; Brain Mapping ; Cerebral Cortex/*physiology ; Color Perception ; Cues ; Frontal Lobe/physiology ; Humans ; Magnetic Resonance Imaging ; Motor Cortex/physiology ; Occipital Lobe/physiology ; Photic Stimulation ; Task Performance and Analysis ; *Time Perception
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    Planet hunting. The search for pale blue dots (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Irion, Robert -- New York, N.Y. -- Science. 2004 Jan 2;303(5654):30-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14704407" target="_blank"〉PubMed〈/a〉
    Keywords: Astronomical Phenomena ; *Astronomy ; Atmosphere ; Europe ; Exobiology ; Extraterrestrial Environment ; Financing, Government ; Interferometry ; Optics and Photonics ; *Planets ; *Spacecraft ; United States ; United States National Aeronautics and Space Administration
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    Phase diagram of degenerate exciton systems (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-24
    Description: Degenerate exciton systems have been produced in quasi-two-dimensional confined areas in semiconductor coupled quantum well structures. We observed contractions of clouds containing tens of thousands of excitons within areas as small as (10 micron)2 near 10 kelvin. The spatial and energy distributions of optically active excitons were determined by measuring photoluminescence as a function of temperature and laser excitation and were used as thermodynamic quantities to construct the phase diagram of the exciton system, which demonstrates the existence of distinct phases. Understanding the formation mechanisms of these degenerate exciton systems can open new opportunities for the realization of Bose-Einstein condensation in the solid state.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lai, C W -- Zoch, J -- Gossard, A C -- Chemla, D S -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):503-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Applied Science and Technology, University of California at Berkeley, Berkeley, CA 94720, USA. celai@lbl.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739453" target="_blank"〉PubMed〈/a〉
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    Astrophysics. Are most life-friendly stars older than the sun? (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Irion, Robert -- New York, N.Y. -- Science. 2004 Jan 2;303(5654):27.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14704403" target="_blank"〉PubMed〈/a〉
    Keywords: Astronomical Phenomena ; *Astronomy ; Earth (Planet) ; Evolution, Chemical ; Evolution, Planetary ; *Exobiology ; Extraterrestrial Environment ; Time
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    The virtues of teaching (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galston, Arthur W -- New York, N.Y. -- Science. 2004 Jul 30;305(5684):611.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15286349" target="_blank"〉PubMed〈/a〉
    Keywords: *Faculty ; Laboratories/*organization & administration ; *Research ; *Teaching ; Universities
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    European science. Institute sparks an Italian renaissance in mouse biology (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Oct 8;306(5694):217-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15472054" target="_blank"〉PubMed〈/a〉
    Keywords: *Academies and Institutes/organization & administration ; Animals ; Europe ; *Genetic Research ; International Cooperation ; Italy ; Mice/*genetics ; Research Personnel
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    Evolutionary biology. Changing a fish's bony armor in the wink of a gene (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Jun 18;304(5678):1736.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15205506" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Alleles ; Animals ; *Biological Evolution ; Breeding ; Crosses, Genetic ; Environment ; Extremities/growth & development ; Fresh Water ; Gene Expression Regulation ; Genes ; Genome ; Homeodomain Proteins/*genetics/metabolism ; Mutation ; Paired Box Transcription Factors ; Seawater ; Selection, Genetic ; Smegmamorpha/*anatomy & histology/*genetics ; Transcription Factors/*genetics/metabolism
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    Soil carbon sequestration impacts on global climate change and food security (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-06-12
    Description: The carbon sink capacity of the world's agricultural and degraded soils is 50 to 66% of the historic carbon loss of 42 to 78 gigatons of carbon. The rate of soil organic carbon sequestration with adoption of recommended technologies depends on soil texture and structure, rainfall, temperature, farming system, and soil management. Strategies to increase the soil carbon pool include soil restoration and woodland regeneration, no-till farming, cover crops, nutrient management, manuring and sludge application, improved grazing, water conservation and harvesting, efficient irrigation, agroforestry practices, and growing energy crops on spare lands. An increase of 1 ton of soil carbon pool of degraded cropland soils may increase crop yield by 20 to 40 kilograms per hectare (kg/ha) for wheat, 10 to 20 kg/ha for maize, and 0.5 to 1 kg/ha for cowpeas. As well as enhancing food security, carbon sequestration has the potential to offset fossil fuel emissions by 0.4 to 1.2 gigatons of carbon per year, or 5 to 15% of the global fossil-fuel emissions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lal, R -- New York, N.Y. -- Science. 2004 Jun 11;304(5677):1623-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Carbon Management and Sequestration Center, Ohio State University Columbus, OH 43210, USA. lal.1@osu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15192216" target="_blank"〉PubMed〈/a〉
    Keywords: *Agriculture ; Atmosphere ; Biomass ; Carbon/*analysis ; Carbon Dioxide ; *Climate ; Crops, Agricultural/growth & development ; Ecosystem ; *Food ; Food Supply ; Humans ; Malnutrition ; Poverty ; Soil/*analysis
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    European patents. Stem cell claims face legal hurdles (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Sep 24;305(5692):1887.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15448234" target="_blank"〉PubMed〈/a〉
    Keywords: Embryo Research/*legislation & jurisprudence ; Embryo, Mammalian/*cytology ; Europe ; Humans ; Intellectual Property ; *Patents as Topic ; *Stem Cells
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    Ultra-low thermal conductivity in W/Al2O3 nanolaminates (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-14
    Description: Atomic layer deposition and magnetron sputter deposition were used to synthesize thin-film multilayers of W/Al(2)O(3). With individual layers only a few nanometers thick, the high interface density produced a strong impediment to heat transfer, giving rise to a thermal conductivity of approximately 0.6 watts per meter per kelvin. This result suggests that high densities of interfaces between dissimilar materials may provide a route for the production of thermal barriers with ultra-low thermal conductivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Costescu, R M -- Cahill, D G -- Fabreguette, F H -- Sechrist, Z A -- George, S M -- New York, N.Y. -- Science. 2004 Feb 13;303(5660):989-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering and Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14963323" target="_blank"〉PubMed〈/a〉
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    Policy rebuttal. HIV vaccine trial justified (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McNeil, John G -- Johnston, Margaret I -- Birx, Deborah L -- Tramont, Edmund C -- New York, N.Y. -- Science. 2004 Feb 13;303(5660):961.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, and 2Walter Reed Army Institute of Research, Washington, DC 20307, USA. jomcneil@mail.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14963313" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines/administration & dosage/*immunology ; CD4-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/immunology ; *Clinical Trials, Phase III as Topic ; HIV Antibodies/biosynthesis/immunology ; HIV Infections/*immunology/prevention & control/therapy ; Humans ; Immunization Schedule ; Immunization, Secondary ; National Institutes of Health (U.S.) ; Thailand ; United States ; Vaccines, Synthetic/administration & dosage/immunology
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    The structure and receptor binding properties of the 1918 influenza hemagglutinin (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-07
    Description: The 1918 influenza pandemic resulted in about 20 million deaths. This enormous impact, coupled with renewed interest in emerging infections, makes characterization of the virus involved a priority. Receptor binding, the initial event in virus infection, is a major determinant of virus transmissibility that, for influenza viruses, is mediated by the hemagglutinin (HA) membrane glycoprotein. We have determined the crystal structures of the HA from the 1918 virus and two closely related HAs in complex with receptor analogs. They explain how the 1918 HA, while retaining receptor binding site amino acids characteristic of an avian precursor HA, is able to bind human receptors and how, as a consequence, the virus was able to spread in the human population.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gamblin, S J -- Haire, L F -- Russell, R J -- Stevens, D J -- Xiao, B -- Ha, Y -- Vasisht, N -- Steinhauer, D A -- Daniels, R S -- Elliot, A -- Wiley, D C -- Skehel, J J -- AI-13654/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2004 Mar 19;303(5665):1838-42. Epub 2004 Feb 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council (MRC) National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14764886" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; Birds ; Crystallography, X-Ray ; Hemagglutinin Glycoproteins, Influenza Virus/*chemistry/*metabolism ; History, 20th Century ; Humans ; Hydrogen Bonding ; Influenza A virus/*immunology/metabolism/pathogenicity ; Influenza, Human/epidemiology/history/*virology ; Membrane Glycoproteins/chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Structure, Tertiary ; Receptors, Virus/*metabolism ; Sequence Alignment ; Sialic Acids/metabolism ; Species Specificity ; Swine
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    Stem cell politics. California debates whether to become stem cell heavyweight (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Sep 10;305(5690):1544-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15361590" target="_blank"〉PubMed〈/a〉
    Keywords: California ; Cloning, Organism ; Embryo Research/*economics ; Financing, Government/legislation & jurisprudence ; Humans ; Pluripotent Stem Cells ; *Politics ; Research Support as Topic/*legislation & jurisprudence ; *Stem Cells
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    Osmium isotope heterogeneity in the constituent phases of mid-ocean ridge basalts (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-01-06
    Description: Radiogenic isotope variations in mid-ocean ridge basalts (MORB) are commonly attributed to compositional variations in Earth's upper mantle. For the rheniumosmium isotope system, constituent MORB phases are shown to possess exceptionally high Re/Os (parent/daughter) ratios, consequently radiogenic 187Os is produced from the decay of 187Re over short periods of time. Thus, in the absence of precise age constraints, Os isotope variations cannot be unambiguously attributed to their source, although Re-Os isotope data for constituent minerals can yield crystallization ages, details of equilibration, and initial Os isotope values that relate directly to the mantle source.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gannoun, Abdelmouhcine -- Burton, Kevin W -- Thomas, Louise E -- Parkinson, Ian J -- Van Calsteren, Peter -- Schiano, Pierre -- New York, N.Y. -- Science. 2004 Jan 2;303(5654):70-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK. a.gannoun@open.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14704423" target="_blank"〉PubMed〈/a〉
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    Antarctic timing of surface water changes off Chile and Patagonian ice sheet response (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-06-26
    Description: Marine sediments from the Chilean continental margin are used to infer millennial-scale changes in southeast Pacific surface ocean water properties and Patagonian ice sheet extent since the last glacial period. Our data show a clear "Antarctic" timing of sea surface temperature changes, which appear systematically linked to meridional displacements in sea ice, westerly winds, and the circumpolar current system. Proxy data for ice sheet changes show a similar pattern as oceanographic variations offshore, but reveal a variable glacier-response time of up to approximately 1000 years, which may explain some of the current discrepancies among terrestrial records in southern South America.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamy, Frank -- Kaiser, Jerome -- Ninnemann, Ulysses -- Hebbeln, Dierk -- Arz, Helge W -- Stoner, Joseph -- New York, N.Y. -- Science. 2004 Jun 25;304(5679):1959-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉GeoForschungsZentrum-Potsdam, Telegrafenberg, 14473 Potsdam, Germany. flamy@gfz-potsdam.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15218147" target="_blank"〉PubMed〈/a〉
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    Very low gene duplication rate in the yeast genome (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-20
    Description: The gene duplication rate in the yeast genome is estimated without assuming the molecular clock model to be approximately 0.01 to 0.06 per gene per billion years; this rate is two orders of magnitude lower than a previous estimate based on the molecular clock model. This difference is explained by extensive concerted evolution via gene conversion between duplicated genes, which violates the assumption of the molecular clock in the analyses of duplicated genes. The average length of the period of concerted evolution and the gene conversion rate are estimated to be approximately 25 million years and approximately 28 times the mutation rate, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, Li-Zhi -- Innan, Hideki -- New York, N.Y. -- Science. 2004 Nov 19;306(5700):1367-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Genetics Center, School of Public Health, University of Texas Health Science Center, 1200 Hermann Pressler, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15550669" target="_blank"〉PubMed〈/a〉
    Keywords: Evolution, Molecular ; Gene Conversion ; *Gene Duplication ; *Genes, Duplicate ; *Genes, Fungal ; Models, Genetic ; Probability ; Saccharomyces/*genetics ; Saccharomyces cerevisiae/*genetics ; Time Factors
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    The Biology of Genomes meeting. The case of the disappearing DNA hotspots (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Jun 11;304(5677):1590.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15192195" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Biological Evolution ; *Genome ; *Genome, Human ; Humans ; Pan troglodytes/*genetics ; *Polymorphism, Single Nucleotide ; *Recombination, Genetic
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    Water resources. As the West goes dry (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2004 Feb 20;303(5661):1124-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14976291" target="_blank"〉PubMed〈/a〉
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    Can the developing world skip petroleum? (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Aug 13;305(5686):967.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15310890" target="_blank"〉PubMed〈/a〉
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  • 141
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    Hematotoxicity in workers exposed to low levels of benzene (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-04
    Description: Benzene is known to have toxic effects on the blood and bone marrow, but its impact at levels below the U.S. occupational standard of 1 part per million (ppm) remains uncertain. In a study of 250 workers exposed to benzene, white blood cell and platelet counts were significantly lower than in 140 controls, even for exposure below 1 ppm in air. Progenitor cell colony formation significantly declined with increasing benzene exposure and was more sensitive to the effects of benzene than was the number of mature blood cells. Two genetic variants in key metabolizing enzymes, myeloperoxidase and NAD(P)H:quinone oxidoreductase, influenced susceptibility to benzene hematotoxicity. Thus, hematotoxicity from exposure to benzene occurred at air levels of 1 ppm or less and may be particularly evident among genetically susceptible subpopulations.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1256034/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1256034/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lan, Qing -- Zhang, Luoping -- Li, Guilan -- Vermeulen, Roel -- Weinberg, Rona S -- Dosemeci, Mustafa -- Rappaport, Stephen M -- Shen, Min -- Alter, Blanche P -- Wu, Yongji -- Kopp, William -- Waidyanatha, Suramya -- Rabkin, Charles -- Guo, Weihong -- Chanock, Stephen -- Hayes, Richard B -- Linet, Martha -- Kim, Sungkyoon -- Yin, Songnian -- Rothman, Nathaniel -- Smith, Martyn T -- P30ES01896/ES/NIEHS NIH HHS/ -- P30ES10126/ES/NIEHS NIH HHS/ -- P42 ES004705/ES/NIEHS NIH HHS/ -- P42ES04705/ES/NIEHS NIH HHS/ -- P42ES05948/ES/NIEHS NIH HHS/ -- R01ES06721/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 2004 Dec 3;306(5702):1774-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Cancer Epidemiology and Genetics, National Cancer Institute (NCI), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15576619" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Air Pollutants, Occupational/*toxicity ; Benzene/*toxicity ; Blood Platelets/*drug effects ; China ; Cross-Sectional Studies ; Cytochrome P-450 CYP2E1/genetics ; Female ; Genotype ; Hematopoiesis/drug effects ; Hematopoietic Stem Cells/*drug effects ; Hemoglobins/analysis ; Humans ; Inhalation Exposure/*adverse effects ; Leukocyte Count ; Leukocytes/*drug effects ; Lymphocyte Subsets/drug effects ; Male ; Matched-Pair Analysis ; Maximum Allowable Concentration ; NAD(P)H Dehydrogenase (Quinone)/genetics ; Occupational Exposure/*adverse effects ; Peroxidase/genetics ; Platelet Count ; Polymorphism, Single Nucleotide
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    Jun turnover is controlled through JNK-dependent phosphorylation of the E3 ligase Itch (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-11
    Description: The turnover of Jun proteins, like that of other transcription factors, is regulated through ubiquitin-dependent proteolysis. Usually, such processes are regulated by extracellular stimuli through phosphorylation of the target protein, which allows recognition by F box-containing E3 ubiquitin ligases. In the case of c-Jun and JunB, we found that extracellular stimuli also modulate protein turnover by regulating the activity of an E3 ligase by means of its phosphorylation. Activation of the Jun amino-terminal kinase (JNK) mitogen-activated protein kinase cascade after T cell stimulation accelerated degradation of c-Jun and JunB through phosphorylation-dependent activation of the E3 ligase Itch. This pathway modulates cytokine production by effector T cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, Min -- Labuda, Tord -- Xia, Ying -- Gallagher, Ewen -- Fang, Deyu -- Liu, Yun-Cai -- Karin, Michael -- AI43477/AI/NIAID NIH HHS/ -- ES04151/ES/NIEHS NIH HHS/ -- ES06376/ES/NIEHS NIH HHS/ -- R21AI48542/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2004 Oct 8;306(5694):271-5. Epub 2004 Sep 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0723, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15358865" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD28/immunology ; CD4-Positive T-Lymphocytes/immunology/*metabolism ; Interferon-gamma/metabolism ; Interleukins/metabolism ; Lymphocyte Activation ; *MAP Kinase Kinase Kinase 1 ; MAP Kinase Kinase Kinases/genetics/metabolism ; Mice ; Mitogen-Activated Protein Kinase 8 ; Mitogen-Activated Protein Kinase 9 ; Mitogen-Activated Protein Kinases/*metabolism ; Phosphorylation ; Proto-Oncogene Proteins c-jun/genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; Receptors, Antigen, T-Cell/immunology ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/immunology/*metabolism ; Th2 Cells/cytology/immunology/metabolism ; Ubiquitin/metabolism ; Ubiquitin-Protein Ligases/*metabolism
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    California. Budget deepens cuts to UC system (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-01-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2004 Jan 30;303(5658):605.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14752132" target="_blank"〉PubMed〈/a〉
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    Plant genomics. Syngenta donates 48,000 mutant Arabidopsis plants (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Jun 4;304(5676):1426.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15178774" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/*genetics ; *Genes, Plant ; *Genomics ; *Mutation ; Seeds/genetics ; Switzerland
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    Periodic mesoporous dendrisilicas (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-11-30
    Description: We report the synthesis of a new class of materials called periodic mesoporous dendrisilicas. They are prepared from dendrimers with trialkoxysilyl groups at the outmost shell. Dendrimers of various cores and numbers of shells are used. The dendrisilica synthesis is based on acid- or base-catalyzed hydrolysis of the trialkoxysilyl groups and subsequent template-directed condensation of the dendrimers into an ordered template-dendrisilica nanocomposite. The template can be removed with organic solvents, producing a periodic mesoporous dendrisilica whose pore walls consist of interconnected dendrimer building blocks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landskron, Kai -- Ozin, Geoffrey A -- New York, N.Y. -- Science. 2004 Nov 26;306(5701):1529-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Materials Chemistry Research Group, Department of Chemistry, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15567857" target="_blank"〉PubMed〈/a〉
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    Mammalian biology: more genomes, but shallower coverage (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 May 28;304(5675):1227.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15166337" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Genome ; Mammals/*genetics ; Regulatory Sequences, Nucleic Acid ; *Sequence Analysis, DNA ; Sequence Homology, Nucleic Acid
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    What's missing from undergrad science? (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jakosky, Bruce M -- New York, N.Y. -- Science. 2004 Jun 25;304(5679):1904.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15218127" target="_blank"〉PubMed〈/a〉
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    Drug testing. Regulators talk up plans for drug biomarkers (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-11-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Nov 12;306(5699):1119.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15539576" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomarkers/analysis ; Controlled Clinical Trials as Topic ; *Drug Approval ; Humans ; Treatment Outcome ; United States ; *United States Food and Drug Administration
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    Scientific publishing. Suit seeks to ease trade embargo rules (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-10-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- New York, N.Y. -- Science. 2004 Oct 1;306(5693):30.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15459355" target="_blank"〉PubMed〈/a〉
    Keywords: Commerce/*legislation & jurisprudence ; *Government Regulation ; Publishing/*legislation & jurisprudence ; United States ; United States Government Agencies
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    Crystal structure of a photolyase bound to a CPD-like DNA lesion after in situ repair (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-12-04
    Description: DNA photolyases use light energy to repair DNA that comprises ultraviolet-induced lesions such as the cis-syn cyclobutane pyrimidine dimers (CPDs). Here we report the crystal structure of a DNA photolyase bound to duplex DNA that is bent by 50 degrees and comprises a synthetic CPD lesion. This CPD lesion is flipped into the active site and split there into two thymines by synchrotron radiation at 100 K. Although photolyases catalyze blue light-driven CPD cleavage only above 200 K, this structure apparently mimics a structural substate during light-driven DNA repair in which back-flipping of the thymines into duplex DNA has not yet taken place.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mees, Alexandra -- Klar, Tobias -- Gnau, Petra -- Hennecke, Ulrich -- Eker, Andre P M -- Carell, Thomas -- Essen, Lars-Oliver -- New York, N.Y. -- Science. 2004 Dec 3;306(5702):1789-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, Butenandt-Strasse 5-13, Ludwig Maximilians University, D-81377 Munich, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15576622" target="_blank"〉PubMed〈/a〉
    Keywords: Base Pairing ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; DNA/*chemistry/metabolism ; *DNA Damage ; *DNA Repair ; DNA, Single-Stranded/chemistry/metabolism ; Deoxyribodipyrimidine Photo-Lyase/*chemistry/metabolism ; Flavin-Adenine Dinucleotide/metabolism ; Hydrogen Bonding ; Nucleic Acid Conformation ; Protein Conformation ; Pyrimidine Dimers/*chemistry/metabolism ; Synechococcus/*enzymology ; Thymine/chemistry
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    Ultrahigh-resolution spin-echo measurement of surface potential energy landscapes (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-06-19
    Description: We demonstrate two approaches that use the recently developed helium spin-echo technique to measure surface potential energy landscapes. For helium-lithium fluoride (100), we use the selective adsorption phenomenon to obtain the complete experimental band structure of atoms in a corrugated surface potential. For carbon monoxide-copper (001), we measure the diffusion-induced energy broadening in the scattered helium beam and extract properties of the adsorbate-substrate potential. The measurements are made possible by the resolution of our new spectrometer, which improves on existing resolution by three orders of magnitude. We show that it is possible to produce benchmark energy landscapes to assist evaluation and development of first-principles theory in the problematic van der Waals/weak chemisorption regime.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jardine, Andrew P -- Dworski, Shechar -- Fouquet, Peter -- Alexandrowicz, Gil -- Riley, David J -- Lee, Gabriel Y H -- Ellis, John -- Allison, William -- New York, N.Y. -- Science. 2004 Jun 18;304(5678):1790-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, UK. apj24@cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15205531" target="_blank"〉PubMed〈/a〉
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    Mitochondrial fusion intermediates revealed in vitro (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-08-07
    Description: The events that occur during the fusion of double-membraned mitochondria are unknown. As an essential step toward determining the mechanism of mitochondrial fusion, we have captured this event in vitro. Mitochondrial outer and inner membrane fusion events were separable and mechanistically distinct, but both required guanosine 5'-triphosphate hydrolysis. Homotypic trans interactions of the ancient outer transmembrane guanosine triphosphatase, Fzo1, were required to promote the fusion of mitochondrial outer membranes, whereas electrical potential was also required for fusion of inner membranes. Our conclusions provide fundamental insights into the molecular events driving mitochondrial fusion and advance our understanding of the evolution of mitochondrial fusion in eukaryotic cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meeusen, Shelly -- McCaffery, J Michael -- Nunnari, Jodi -- R01-GM62942A/GM/NIGMS NIH HHS/ -- S10 RR019409-01/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2004 Sep 17;305(5691):1747-52. Epub 2004 Aug 5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Molecular and Cellular Biology, Center of Genetics and Development, University of California, Davis, CA 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297626" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Energy Metabolism ; GTP Phosphohydrolases/genetics/metabolism ; Green Fluorescent Proteins ; Guanosine Triphosphate/metabolism ; Intracellular Membranes/*physiology/ultrastructure ; Luminescent Proteins/metabolism ; *Membrane Fusion ; Membrane Potentials ; Membrane Proteins/genetics/metabolism ; Microscopy, Fluorescence ; Mitochondria/*physiology/*ultrastructure ; Mitochondrial Proteins ; Models, Biological ; Saccharomyces cerevisiae/genetics/*physiology/ultrastructure ; Saccharomyces cerevisiae Proteins
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    Elastic behavior of cross-linked and bundled actin networks (2004)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2004-05-29
    Description: Networks of cross-linked and bundled actin filaments are ubiquitous in the cellular cytoskeleton, but their elasticity remains poorly understood. We show that these networks exhibit exceptional elastic behavior that reflects the mechanical properties of individual filaments. There are two distinct regimes of elasticity, one reflecting bending of single filaments and a second reflecting stretching of entropic fluctuations of filament length. The mechanical stiffness can vary by several decades with small changes in cross-link concentration, and can increase markedly upon application of external stress. We parameterize the full range of behavior in a state diagram and elucidate its origin with a robust model.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gardel, M L -- Shin, J H -- MacKintosh, F C -- Mahadevan, L -- Matsudaira, P -- Weitz, D A -- GM52703/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 May 28;304(5675):1301-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15166374" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/*chemistry/metabolism ; Actins/*chemistry/metabolism ; Biopolymers/chemistry/metabolism ; Elasticity ; Entropy ; Mathematics ; Microfilament Proteins/chemistry/metabolism ; Models, Biological ; Stress, Mechanical
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    Mexico. Government uses carrot, stick to retain graduate students (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- New York, N.Y. -- Science. 2004 Aug 20;305(5687):1091.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15326322" target="_blank"〉PubMed〈/a〉
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    The Gs-linked receptor GPR3 maintains meiotic arrest in mammalian oocytes (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-14
    Description: Mammalian oocytes are held in prophase arrest by an unknown signal from the surrounding somatic cells. Here we show that the orphan Gs-linked receptor GPR3, which is localized in the oocyte, maintains this arrest. Oocytes from Gpr3 knockout mice resume meiosis within antral follicles, independently of an increase in luteinizing hormone, and this phenotype can be reversed by injection of Gpr3 RNA into the oocytes. Thus, the GPR3 receptor is a link in communication between the somatic cells and oocyte of the ovarian follicle and is crucial for the regulation of meiosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mehlmann, Lisa M -- Saeki, Yoshinaga -- Tanaka, Shigeru -- Brennan, Thomas J -- Evsikov, Alexei V -- Pendola, Frank L -- Knowles, Barbara B -- Eppig, John J -- Jaffe, Laurinda A -- New York, N.Y. -- Science. 2004 Dec 10;306(5703):1947-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, University of Connecticut Health Center (UCHC), Farmington, CT 06032, USA. lmehlmann@neuron.uchc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15591206" target="_blank"〉PubMed〈/a〉
    Keywords: Adenylyl Cyclases/metabolism ; Animals ; Chondroitin Sulfate Proteoglycans/genetics/metabolism ; Expressed Sequence Tags ; Female ; Granulosa Cells/physiology ; Heterotrimeric GTP-Binding Proteins/*metabolism ; In Situ Hybridization ; Lectins, C-Type ; Ligands ; Luteinizing Hormone/metabolism ; *Meiosis ; Metaphase ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mitosis ; Oocytes/*physiology ; Ovarian Follicle/*physiology ; RNA/genetics/metabolism ; Receptors, G-Protein-Coupled/genetics/*physiology ; Versicans
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    U.S. science. Weak economy, higher stipends send more to graduate school (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-07-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- New York, N.Y. -- Science. 2004 Jul 9;305(5681):173.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15247454" target="_blank"〉PubMed〈/a〉
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    Physics. The cup of the hand (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Laughlin, R B -- New York, N.Y. -- Science. 2004 Mar 5;303(5663):1475-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Stanford University, Stanford, CA 94305, USA. rbl@large.stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15001764" target="_blank"〉PubMed〈/a〉
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  • 158
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    Rise and fall of the Beringian steppe bison (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-30
    Description: The widespread extinctions of large mammals at the end of the Pleistocene epoch have often been attributed to the depredations of humans; here we present genetic evidence that questions this assumption. We used ancient DNA and Bayesian techniques to reconstruct a detailed genetic history of bison throughout the late Pleistocene and Holocene epochs. Our analyses depict a large diverse population living throughout Beringia until around 37,000 years before the present, when the population's genetic diversity began to decline dramatically. The timing of this decline correlates with environmental changes associated with the onset of the last glacial cycle, whereas archaeological evidence does not support the presence of large populations of humans in Eastern Beringia until more than 15,000 years later.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shapiro, Beth -- Drummond, Alexei J -- Rambaut, Andrew -- Wilson, Michael C -- Matheus, Paul E -- Sher, Andrei V -- Pybus, Oliver G -- Gilbert, M Thomas P -- Barnes, Ian -- Binladen, Jonas -- Willerslev, Eske -- Hansen, Anders J -- Baryshnikov, Gennady F -- Burns, James A -- Davydov, Sergei -- Driver, Jonathan C -- Froese, Duane G -- Harington, C Richard -- Keddie, Grant -- Kosintsev, Pavel -- Kunz, Michael L -- Martin, Larry D -- Stephenson, Robert O -- Storer, John -- Tedford, Richard -- Zimov, Sergei -- Cooper, Alan -- New York, N.Y. -- Science. 2004 Nov 26;306(5701):1561-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Henry Wellcome Ancient Biomolecules Centre, Oxford University, South Parks Road, Oxford OX13PS, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15567864" target="_blank"〉PubMed〈/a〉
    Keywords: Alaska ; Animals ; Bayes Theorem ; *Bison/classification/genetics ; Canada ; China ; *Climate ; DNA, Mitochondrial/genetics ; Environment ; *Fossils ; Genetic Variation ; Genetics, Population ; Human Activities ; Humans ; North America ; Phylogeny ; Population Dynamics ; Sequence Analysis, DNA ; Time
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    European funding. E.U. proposes bigger framework plus a bonus for researchers (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Jun 25;304(5679):1885-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15218112" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Europe ; European Union/*economics ; *Research Support as Topic
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    Foreign-born physician-scientists (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mendoza-Londono, Roberto -- New York, N.Y. -- Science. 2004 Jul 30;305(5684):609.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15286346" target="_blank"〉PubMed〈/a〉
    Keywords: *Career Mobility ; Developing Countries ; *Education, Graduate ; *Emigration and Immigration ; *Foreign Medical Graduates ; Humans ; *Internship and Residency ; National Institutes of Health (U.S.) ; United States
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    A clearer look at Asian pollution (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- New York, N.Y. -- Science. 2004 May 28;304(5675):1282.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15166363" target="_blank"〉PubMed〈/a〉
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  • 162
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    Mutations in a human ROBO gene disrupt hindbrain axon pathway crossing and morphogenesis (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-24
    Description: The mechanisms controlling axon guidance are of fundamental importance in understanding brain development. Growing corticospinal and somatosensory axons cross the midline in the medulla to reach their targets and thus form the basis of contralateral motor control and sensory input. The motor and sensory projections appeared uncrossed in patients with horizontal gaze palsy with progressive scoliosis (HGPPS). In patients affected with HGPPS, we identified mutations in the ROBO3 gene, which shares homology with roundabout genes important in axon guidance in developing Drosophila, zebrafish, and mouse. Like its murine homolog Rig1/Robo3, but unlike other Robo proteins, ROBO3 is required for hindbrain axon midline crossing.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618874/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618874/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jen, Joanna C -- Chan, Wai-Man -- Bosley, Thomas M -- Wan, Jijun -- Carr, Janai R -- Rub, Udo -- Shattuck, David -- Salamon, Georges -- Kudo, Lili C -- Ou, Jing -- Lin, Doris D M -- Salih, Mustafa A M -- Kansu, Tulay -- Al Dhalaan, Hesham -- Al Zayed, Zayed -- MacDonald, David B -- Stigsby, Bent -- Plaitakis, Andreas -- Dretakis, Emmanuel K -- Gottlob, Irene -- Pieh, Christina -- Traboulsi, Elias I -- Wang, Qing -- Wang, Lejin -- Andrews, Caroline -- Yamada, Koki -- Demer, Joseph L -- Karim, Shaheen -- Alger, Jeffry R -- Geschwind, Daniel H -- Deller, Thomas -- Sicotte, Nancy L -- Nelson, Stanley F -- Baloh, Robert W -- Engle, Elizabeth C -- DC00162/DC/NIDCD NIH HHS/ -- DC05524/DC/NIDCD NIH HHS/ -- EY12498/EY/NEI NIH HHS/ -- EY13583/EY/NEI NIH HHS/ -- EY15298/EY/NEI NIH HHS/ -- EY15311/EY/NEI NIH HHS/ -- MH60233/MH/NIMH NIH HHS/ -- P30 HD 18655/HD/NICHD NIH HHS/ -- R01 EY008313/EY/NEI NIH HHS/ -- R01 EY008313-14/EY/NEI NIH HHS/ -- R01 HL066251/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2004 Jun 4;304(5676):1509-13. Epub 2004 Apr 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of California, Los Angeles, CA 90095, USA. jjen@ucla.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15105459" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Alternative Splicing ; Amino Acid Motifs ; Amino Acid Sequence ; Axons/*physiology ; Evoked Potentials, Motor ; Evoked Potentials, Somatosensory ; Female ; Functional Laterality ; Genetic Linkage ; Humans ; In Situ Hybridization ; Magnetic Resonance Imaging ; Male ; Medulla Oblongata/growth & development/pathology ; Microsatellite Repeats ; Molecular Sequence Data ; Morphogenesis ; Mutation ; Neural Pathways ; Ophthalmoplegia/*genetics/pathology/physiopathology ; Pedigree ; Protein Structure, Tertiary ; Receptors, Immunologic/chemistry/*genetics/*metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Rhombencephalon/*growth & development/pathology ; Scoliosis/*genetics/pathology/physiopathology ; Sequence Analysis, DNA ; Syndrome
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    Dynamic instability in a DNA-segregating prokaryotic actin homolog (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-06
    Description: Dynamic instability-the switching of a two-state polymer between phases of steady elongation and rapid shortening-is essential to the cellular function of eukaryotic microtubules, especially during chromosome segregation. Since the discovery of dynamic instability 20 years ago, no other biological polymer has been found to exhibit this behavior. Using total internal reflection fluorescence microscopy and fluorescence resonance energy transfer, we observe that the prokaryotic actin homolog ParM, whose assembly is required for the segregation of large, low-copy number plasmids, displays both dynamic instability and symmetrical, bidirectional polymerization. The dynamic instability of ParM is regulated by adenosine triphosphate (ATP) hydrolysis, and filaments are stabilized by a cap of ATP-bound monomers. ParM is not related to tubulin, so its dynamic instability must have arisen by convergent evolution driven by a set of common constraints on polymer-based segregation of DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garner, Ethan C -- Campbell, Christopher S -- Mullins, R Dyche -- GM61010-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Nov 5;306(5698):1021-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of California, 600 16th Street, San Francisco, CA 94107, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528442" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/chemistry ; Adenosine Triphosphate/metabolism ; Bacterial Proteins/*chemistry/physiology/ultrastructure ; Biopolymers/chemistry ; DNA, Bacterial/*metabolism ; Fluorescence Resonance Energy Transfer ; Hydrolysis ; Kinetics ; Microscopy, Fluorescence ; Mutagenesis
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  • 164
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    Cancer research. Proposed leukemia stem cell encounters a blast of scrutiny (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Aug 13;305(5686):929.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15310869" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blast Crisis/*pathology ; Cell Differentiation ; Cell Division ; Cells, Cultured ; Cytoskeletal Proteins/metabolism ; Granulocytes/cytology ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood/*pathology ; Macrophages/cytology ; Mice ; Myeloid Progenitor Cells/pathology/*physiology ; Stem Cells/physiology ; Trans-Activators/metabolism ; beta Catenin
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    Uridine addition after microRNA-directed cleavage (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-06
    Description: One of the important roles of microRNA (miRNA) is to direct the cleavage of messenger RNA (mRNA). However, the mechanisms of decay of the cleaved mRNA products is not well understood. We show that miRNA-directed cleavage products in organisms as diverse as Arabidopsis, mouse, and Epstein-Barr virus have at their 3' ends a stretch (1 to 24 nucleotides) of oligouridine posttranscriptionally added downstream of the cleavage site. This 3' uridine addition, as shown for Arabidopsis, is correlated with decapping and 5' shortening of the cleaved products, suggesting a mechanistic step in the miRNA-directed mRNA decay mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shen, Binzhang -- Goodman, Howard M -- New York, N.Y. -- Science. 2004 Nov 5;306(5698):997.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Harvard Medical School, and Department of Molecular Biology, Massachusetts General Hospital, 50 Blossom Street, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528436" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arabidopsis ; Cells, Cultured ; Cloning, Molecular ; Herpesvirus 4, Human/metabolism ; Humans ; Mice ; MicroRNAs/*metabolism ; Poly U/metabolism ; RNA, Messenger/metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Uridine/*metabolism
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    Reproductive biology. Japanese scientists create fatherless mouse (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Apr 23;304(5670):501-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15105467" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; *Embryonic and Fetal Development ; Female ; Gene Expression Regulation, Developmental ; *Genomic Imprinting ; Insulin-Like Growth Factor II/genetics/physiology ; Japan ; Mice ; Mutation ; Oocytes/*physiology ; *Parthenogenesis ; RNA, Long Noncoding ; RNA, Untranslated/genetics/physiology
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  • 167
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    Invertebrate conservation. Respect for things that flutter, creep, and crawl (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Apr 2;304(5667):27.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15060291" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Conservation of Natural Resources ; Ecosystem ; Environment ; Food Chain ; *Invertebrates ; United States
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  • 168
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    Settling in on campus (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- New York, N.Y. -- Science. 2004 May 28;304(5675):1282-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15166362" target="_blank"〉PubMed〈/a〉
    Keywords: Culture ; *Education, Graduate ; *Faculty ; *Foreign Professional Personnel ; Internationality ; Language ; Research ; *Research Personnel ; United States
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    Scholarly publishing. U.S. eases the squeeze on 'sanctioned' authors (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- New York, N.Y. -- Science. 2004 Apr 9;304(5668):187.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15073341" target="_blank"〉PubMed〈/a〉
    Keywords: *Authorship ; Commerce/*legislation & jurisprudence ; International Cooperation/legislation & jurisprudence ; Peer Review, Research/*legislation & jurisprudence ; Publishing/*legislation & jurisprudence ; Societies, Scientific ; United States ; *United States Government Agencies
    Print ISSN: 0036-8075
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  • 170
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    Nanoribbon waveguides for subwavelength photonics integration (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-31
    Description: Although the electrical integration of chemically synthesized nanowires has been achieved with lithography, optical integration, which promises high speeds and greater device versatility, remains unexplored. We describe the properties and functions of individual crystalline oxide nanoribbons that act as subwavelength optical waveguides and assess their applicability as nanoscale photonic elements. The length, flexibility, and strength of these structures enable their manipulation on surfaces, including the optical linking of nanoribbon waveguides and other nanowire elements to form networks and device components. We demonstrate the assembly of ribbon waveguides with nanowire light sources and detectors as a first step toward building nanowire photonic circuitry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Law, Matt -- Sirbuly, Donald J -- Johnson, Justin C -- Goldberger, Josh -- Saykally, Richard J -- Yang, Peidong -- New York, N.Y. -- Science. 2004 Aug 27;305(5688):1269-73.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15333835" target="_blank"〉PubMed〈/a〉
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    U.S. research policy. NSF blocked from funding Smithsonian scientists (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, Jeffrey -- New York, N.Y. -- Science. 2004 Dec 10;306(5703):1873.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15591170" target="_blank"〉PubMed〈/a〉
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    Biomedicine. An end to the prion debate? Don't count on it (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Jul 30;305(5684):589.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15286333" target="_blank"〉PubMed〈/a〉
    Keywords: Amyloid/chemistry/metabolism ; Animals ; Brain Chemistry ; Escherichia coli/genetics/metabolism ; Mice ; Mice, Transgenic ; Prion Diseases/*etiology ; Prions/administration & dosage/biosynthesis/chemistry/*pathogenicity ; Protein Folding ; Recombinant Proteins/administration & dosage/chemistry ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Society for Integrative and Comparative Biology meeting. Estrogen may disrupt nitrogen fixation (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Feb 13;303(5660):950.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14963305" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/*drug effects/metabolism ; Bacterial Proteins/*metabolism ; Estrogens, Non-Steroidal/*pharmacology ; Insecticides/pharmacology ; Isoflavones/metabolism ; Medicago sativa/*drug effects/growth & development/microbiology ; Methyl Parathion/pharmacology ; Nitrogen Fixation/*drug effects ; Pentachlorophenol/pharmacology ; Phytoestrogens ; Plant Preparations/metabolism ; Symbiosis/drug effects
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Psychopharmacology. Volatile chemistry: children and antidepressants (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-07-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Jul 23;305(5683):468-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15273374" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Antidepressive Agents, Second-Generation/adverse ; effects/pharmacokinetics/pharmacology/therapeutic use ; Brain/metabolism ; Child ; Clinical Trials as Topic ; Depressive Disorder/*drug therapy ; Emotions ; Humans ; Risk Factors ; Self-Injurious Behavior ; Serotonin/metabolism ; Serotonin Uptake Inhibitors/*adverse ; effects/pharmacokinetics/pharmacology/*therapeutic use ; Suicide ; United States ; United States Food and Drug Administration
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 175
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    A link between mRNA turnover and RNA interference in Arabidopsis (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-06
    Description: In RNA interference (RNAi), double-stranded RNA (dsRNA) triggers degradation of homologous messenger RNA. In many organisms, RNA-dependent RNA polymerase (RdRp) is required to initiate or amplify RNAi, but the substrate for dsRNA synthesis in vivo is not known. Here, we show that RdRp-dependent transgene silencing in Arabidopsis was caused by mutation of XRN4, which is a ribonuclease (RNase) implicated in mRNA turnover by means of decapping and 5'-3' exonucleolysis. When both XRN4 and the RdRp were mutated, the plants accumulated decapped transgene mRNA. We propose that mRNAs lacking a cap structure become exposed to RdRp to initiate or maintain RNAi.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gazzani, S -- Lawrenson, T -- Woodward, C -- Headon, D -- Sablowski, R -- BBS/E/J/00000594/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2004 Nov 5;306(5698):1046-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528448" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arabidopsis/*genetics ; Arabidopsis Proteins/genetics ; Exoribonucleases/genetics ; Gene Silencing ; Homeodomain Proteins/genetics ; Mutation ; Plant Proteins/genetics ; Plants, Genetically Modified ; RNA Caps ; *RNA Interference ; RNA Replicase/metabolism ; RNA, Messenger/*metabolism ; RNA, Plant/*metabolism ; Rats ; Recombinant Fusion Proteins/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Climatology. Stitching together a global system of systems (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawler, Andrew -- New York, N.Y. -- Science. 2004 Aug 20;305(5687):1096.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15326327" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 177
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    Honey bee nest thermoregulation: diversity promotes stability (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-26
    Description: A honey bee colony is characterized by high genetic diversity among its workers, generated by high levels of multiple mating by its queen. Few clear benefits of this genetic diversity are known. Here we show that brood nest temperatures in genetically diverse colonies (i.e., those sired by several males) tend to be more stable than in genetically uniform ones (i.e., those sired by one male). One reason this increased stability arises is because genetically determined diversity in workers' temperature response thresholds modulates the hive-ventilating behavior of individual workers, preventing excessive colony-level responses to temperature fluctuations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, Julia C -- Myerscough, Mary R -- Graham, Sonia -- Oldroyd, Benjamin P -- New York, N.Y. -- Science. 2004 Jul 16;305(5682):402-4. Epub 2004 Jun 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, Macleay Building A12, University of Sydney, NSW 2006, Australia. jjones@bio.usyd.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15218093" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bees/genetics/*physiology ; Behavior, Animal ; Biological Evolution ; Body Temperature Regulation ; Female ; *Genetic Variation ; Homeostasis ; Male ; Selection, Genetic ; Sexual Behavior, Animal ; Temperature
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    Autophagy in health and disease: a double-edged sword (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-11-06
    Description: Autophagy, the process by which cells recycle cytoplasm and dispose of excess or defective organelles, has entered the research spotlight largely owing to the discovery of the protein components that drive this process. Identifying the autophagy genes in yeast and finding orthologs in other organisms reveals the conservation of the mechanism of autophagy in eukaryotes and allows the use of molecular genetics and biology in different model systems to study this process. By mostly morphological studies, autophagy has been linked to disease processes. Whether autophagy protects from or causes disease is unclear. Here, we summarize current knowledge about the role of autophagy in disease and health.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1705980/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1705980/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shintani, Takahiro -- Klionsky, Daniel J -- GM53396/GM/NIGMS NIH HHS/ -- R01 GM053396/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Nov 5;306(5698):990-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Michigan, Life Sciences Institute, Ann Arbor, MI 48109-2216, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15528435" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Autophagy/*physiology ; Humans ; Infection/physiopathology ; Muscular Diseases/physiopathology ; Neoplasms/physiopathology ; Neurodegenerative Diseases/physiopathology ; Phagosomes/physiology
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    Nonprofit world. Santa Fe Institute seeks president (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, Jeffrey -- New York, N.Y. -- Science. 2004 Oct 1;306(5693):33.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15459357" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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  • 180
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    Human being redux (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gazzaniga, Michael S -- New York, N.Y. -- Science. 2004 Apr 16;304(5669):388-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15087527" target="_blank"〉PubMed〈/a〉
    Keywords: Beginning of Human Life ; *Cloning, Organism/ethics/legislation & jurisprudence ; *Embryo Research/ethics ; Embryonic and Fetal Development ; Humans ; Korea ; Personhood ; Stem Cells ; United States ; Value of Life
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  • 181
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    Hsp104 catalyzes formation and elimination of self-replicating Sup35 prion conformers (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-25
    Description: The protein-remodeling factor Hsp104 governs inheritance of [PSI+], a yeast prion formed by self-perpetuating amyloid conformers of the translation termination factor Sup35. Perplexingly, either excess or insufficient Hsp104 eliminates [PSI+]. In vitro, at low concentrations, Hsp104 catalyzed the formation of oligomeric intermediates that proved critical for the nucleation of Sup 35 fibrillization de novo and displayed a conformation common among amyloidogenic polypeptides. At higher Hsp104 concentrations, amyloidogenic oligomerization and contingent fibrillization were abolished. Hsp104 also disassembled mature fibers in a manner that initially exposed new surfaces for conformational replication but eventually exterminated prion conformers. These Hsp104 activities differed in their reaction mechanism and can explain [PSI+] inheritance patterns.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shorter, James -- Lindquist, Susan -- GM25874/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Jun 18;304(5678):1793-7. Epub 2004 May 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15155912" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/metabolism ; Amyloid/chemistry ; Amyloid beta-Peptides/chemistry/immunology ; Antibodies/immunology ; Biopolymers ; Catalysis ; Heat-Shock Proteins/chemistry/genetics/*metabolism ; Hydrolysis ; Mutation ; Peptide Fragments/chemistry/immunology ; Peptide Termination Factors ; Prions/*chemistry/*metabolism ; Protein Conformation ; Protein Structure, Tertiary ; Saccharomyces cerevisiae Proteins/*chemistry/genetics/*metabolism
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    Comment on "Reelin promotes peripheral synapse elimination and maturation" (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-03-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bidoia, C -- Misgeld, T -- Weinzierl, E -- Buffelli, M -- Feng, G -- Cangiano, A -- Lichtman, J W -- Sanes, J R -- New York, N.Y. -- Science. 2004 Mar 26;303(5666):1977; author reply 1977.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dipartimento di Scienze Neurologiche e della Visione, Universita' di Verona, Strada Le Grazie 8, Verona, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15044788" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/physiology/ultrastructure ; Cell Adhesion Molecules, Neuronal/genetics/*physiology ; Crosses, Genetic ; Diaphragm/innervation ; Extracellular Matrix Proteins/genetics/*physiology ; Mice ; Mice, Neurologic Mutants ; Mice, Transgenic ; Motor Endplate/ultrastructure ; Muscle, Skeletal/innervation ; Mutation ; Nerve Tissue Proteins ; Neuromuscular Junction/*growth & development/physiology/ultrastructure ; Phenotype ; Serine Endopeptidases ; Synapses/*physiology/ultrastructure
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    Basic and clinical immunology meeting. And action! Dendritic cells go live (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):772-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297645" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antirheumatic Agents/therapeutic use ; Arthritis, Juvenile/drug therapy/genetics/immunology ; Autoimmunity ; Cell Movement ; Child ; Dendritic Cells/*immunology/physiology ; Humans ; *Immune Tolerance ; Interleukin 1 Receptor Antagonist Protein ; Interleukin-1/genetics/physiology ; Lymph Nodes/immunology ; Mice ; Sialoglycoproteins/therapeutic use ; T-Lymphocytes/immunology ; Up-Regulation
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    Curving and frustrating flatland (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-02
    Description: Two polymer chains that occupy equal volumes when covalently linked together at one end self-assemble into an alternating lamellar morphology that has a characteristic period dictated by the molecular weight. When such copolymers are confined within alumina membranes that have cylindrical pores with diameters comparable to the repeat period, the interaction of the blocks with the confining walls and the imposed curvature induces a morphological transformation to relieve the constraints. Here, we show a lamella-to-toroid transition, captured through the dissolution of the surrounding membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shin, Kyusoon -- Xiang, Hongqi -- Moon, Sung In -- Kim, Taehyung -- McCarthy, Thomas J -- Russell, Thomas P -- New York, N.Y. -- Science. 2004 Oct 1;306(5693):76.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Polymer Science and Engineering, Silvio O. Conte National Center for Polymer Research, University of Massachusetts, Amherst, MA 01003, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15459380" target="_blank"〉PubMed〈/a〉
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    Biochemistry. How active sites communicate in thiamine enzymes (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jordan, Frank -- GM-50380/GM/NIGMS NIH HHS/ -- GM-62330/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Oct 29;306(5697):818-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, Rutgers University, Newark, NJ 07102, USA. frjordan@newark.rutgers.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15514144" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Substitution ; Binding Sites ; Dihydrolipoyllysine-Residue Acetyltransferase ; Dimerization ; Geobacillus stearothermophilus/*enzymology ; Glutamic Acid/chemistry ; Hydrogen Bonding ; Hydrogen-Ion Concentration ; Kinetics ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Protein Subunits ; Protons ; Pyruvate Dehydrogenase (Lipoamide)/*chemistry/*metabolism ; Pyruvate Dehydrogenase Complex/*chemistry/*metabolism ; Thiamine Pyrophosphate/chemistry/*metabolism
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    Scientific community. U.S. prosecutes professors for shipping microbes (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-07-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Jul 9;305(5681):159.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15247442" target="_blank"〉PubMed〈/a〉
    Keywords: *Bacillus ; *Faculty ; Fraud/*legislation & jurisprudence ; Postal Service/legislation & jurisprudence ; *Serratia marcescens ; United States ; Universities
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    Taxonomists and the CBD (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geeta, R -- Levy, Andre -- Hoch, J Matt -- Mark, Melissa -- New York, N.Y. -- Science. 2004 Aug 20;305(5687):1105-6; author reply 1105-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15326334" target="_blank"〉PubMed〈/a〉
    Keywords: *Biodiversity ; *Classification ; Developing Countries ; United States
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    John Schaefer profile. The desire to go faint, fast (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-31
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, Jeffrey -- New York, N.Y. -- Science. 2004 Aug 27;305(5688):1232.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15333820" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
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    Predicting protein structures accurately (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-06-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉von Grotthuss, Marcin -- Wyrwicz, Lucjan S -- Pas, Jakub -- Rychlewski, Leszek -- New York, N.Y. -- Science. 2004 Jun 11;304(5677):1597-9; author reply 1597-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15192202" target="_blank"〉PubMed〈/a〉
    Keywords: Computer Simulation ; Crystallography, X-Ray ; *Protein Conformation ; *Protein Engineering ; *Protein Folding ; Protein Structure, Secondary ; Proteins/*chemistry ; Software
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    Introductory science and mathematics education for 21st-Century biologists (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-07
    Description: Galileo wrote that "the book of nature is written in the language of mathematics"; his quantitative approach to understanding the natural world arguably marks the beginning of modern science. Nearly 400 years later, the fragmented teaching of science in our universities still leaves biology outside the quantitative and mathematical culture that has come to define the physical sciences and engineering. This strikes us as particularly inopportune at a time when opportunities for quantitative thinking about biological systems are exploding. We propose that a way out of this dilemma is a unified introductory science curriculum that fully incorporates mathematics and quantitative thinking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bialek, William -- Botstein, David -- New York, N.Y. -- Science. 2004 Feb 6;303(5659):788-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Princeton University, Princeton, NJ 08544, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14764865" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Science Disciplines/*education ; Biomedical Research/trends ; Chemistry/*education ; Computational Biology/education ; *Curriculum ; Interdisciplinary Communication ; *Mathematics ; Physics/*education ; Software ; Universities
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Intracellular parasite invasion strategies (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-04-10
    Description: Intracellular parasites use various strategies to invade cells and to subvert cellular signaling pathways and, thus, to gain a foothold against host defenses. Efficient cell entry, ability to exploit intracellular niches, and persistence make these parasites treacherous pathogens. Most intracellular parasites gain entry via host-mediated processes, but apicomplexans use a system of adhesion-based motility called "gliding" to actively penetrate host cells. Actin polymerization-dependent motility facilitates parasite migration across cellular barriers, enables dissemination within tissues, and powers invasion of host cells. Efficient invasion has brought widespread success to this group, which includes Toxoplasma, Plasmodium, and Cryptosporidium.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sibley, L D -- New York, N.Y. -- Science. 2004 Apr 9;304(5668):248-53.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Microbiology, Center for Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110, USA. sibley@borcim.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15073368" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/physiology ; Animals ; Apicomplexa/*pathogenicity/*physiology ; Cell Adhesion ; Cell Membrane/parasitology ; Cells/*parasitology ; Cryptosporidium/pathogenicity/physiology ; Models, Biological ; Molecular Motor Proteins/physiology ; Movement ; Plasmodium/pathogenicity/physiology ; Protozoan Proteins/metabolism ; Toxoplasma/pathogenicity/physiology ; Vacuoles/parasitology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Genomics. New sequence boosts rats' research appeal (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):455-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739433" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Experimentation ; Animals ; Biological Specimen Banks ; Cloning, Organism ; Databases, Nucleic Acid ; *Disease Models, Animal ; Embryo, Mammalian ; Evolution, Molecular ; *Genome ; Genome, Human ; Humans ; Mice/genetics ; Models, Animal ; Mutagenesis ; *Rats/genetics ; Recombination, Genetic ; Sequence Analysis, DNA
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 193
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    Ecology. Where rivers meet (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gascon, Claude -- Smith, Michael Leonard -- New York, N.Y. -- Science. 2004 Sep 24;305(5692):1922-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Conservation International, Washington, DC 20036, USA. c.gascon@conservation.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15448259" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Electric Fish/*physiology ; Rivers ; South America
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 194
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    Basic and clinical immunology meeting. An old favorite is resurrected: regulatory T cells take the stage (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Couzin, Jennifer -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):772.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297644" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoimmune Diseases/immunology ; B-Lymphocytes/immunology ; Humans ; *Immune Tolerance ; Receptors, Interleukin-2/analysis ; T-Lymphocytes/*immunology ; T-Lymphocytes, Regulatory/*immunology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 195
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    Use of CD134 as a primary receptor by the feline immunodeficiency virus (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-21
    Description: Feline immunodeficiency virus (FIV) induces a disease similar to acquired immunodeficiency syndrome (AIDS) in cats, yet in contrast to human immunodeficiency virus (HIV), CD4 is not the viral receptor. We identified a primary receptor for FIV as CD134 (OX40), a T cell activation antigen and costimulatory molecule. CD134 expression promotes viral binding and renders cells permissive for viral entry, productive infection, and syncytium formation. Infection is CXCR4-dependent, analogous to infection with X4 strains of HIV. Thus, despite the evolutionary divergence of the feline and human lentiviruses, both viruses use receptors that target the virus to a subset of cells that are pivotal to the acquired immune response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shimojima, Masayuki -- Miyazawa, Takayuki -- Ikeda, Yasuhiro -- McMonagle, Elizabeth L -- Haining, Hayley -- Akashi, Hiroomi -- Takeuchi, Yasuhiro -- Hosie, Margaret J -- Willett, Brian J -- R01 AI49765-01A1/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2004 Feb 20;303(5661):1192-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Veterinary Microbiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14976315" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; CD4-Positive T-Lymphocytes/immunology/metabolism/virology ; Cats ; Cell Line ; Cell Line, Tumor ; DNA, Complementary ; Gene Library ; HIV/metabolism ; HeLa Cells ; Heterocyclic Compounds/pharmacology ; Humans ; Immunodeficiency Virus, Feline/*metabolism/pathogenicity ; Mice ; Molecular Sequence Data ; NIH 3T3 Cells ; Receptors, CXCR4/antagonists & inhibitors/metabolism ; Receptors, OX40 ; Receptors, Tumor Necrosis Factor/chemistry/genetics/immunology/*metabolism ; Receptors, Virus/chemistry/genetics/immunology/*metabolism ; Species Specificity ; Transduction, Genetic ; Transfection
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Science and government. Biosecurity and research: minimizing adverse impacts (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-05-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gaudioso, Jennifer -- Salerno, Reynolds M -- New York, N.Y. -- Science. 2004 Apr 30;304(5671):687.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Sandia National Laboratories, Albuquerque, NM 87185, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15118148" target="_blank"〉PubMed〈/a〉
    Keywords: Biological Warfare/*prevention & control ; *Biomedical Research ; Bioterrorism/legislation & jurisprudence/*prevention & control ; Federal Government ; Government Regulation ; *Microbiology ; Research Personnel ; Risk Assessment ; *Security Measures/legislation & jurisprudence ; United States
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 197
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    The omnibus bill isn't only about dollars (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhattacharjee, Yudhijit -- Holden, Constance -- Seife, Charles -- Kaiser, Jocelyn -- New York, N.Y. -- Science. 2004 Dec 3;306(5702):1663.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15576576" target="_blank"〉PubMed〈/a〉
    Keywords: Censuses ; National Institutes of Health (U.S.)/*legislation & jurisprudence ; Nuclear Warfare/legislation & jurisprudence ; *Science ; Travel/legislation & jurisprudence ; United States
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Nobel Peace Prize. Kenya's Maathai wins for reforestation work (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, Gretchen -- Malakoff, David -- New York, N.Y. -- Science. 2004 Oct 15;306(5695):391.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15486265" target="_blank"〉PubMed〈/a〉
    Keywords: *Conservation of Natural Resources ; *Environment ; History, 20th Century ; History, 21st Century ; Kenya ; *Nobel Prize ; *Trees
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 199
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    U.S. science policy. Risky business (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-10-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mervis, Jeffrey -- New York, N.Y. -- Science. 2004 Oct 8;306(5694):220-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15472055" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research/*economics ; Financing, Government ; *National Institutes of Health (U.S.)/economics ; Peer Review, Research ; Public Policy ; *Research Support as Topic ; Risk ; United States ; *United States Government Agencies
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 200
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    TGF-beta signaling in fibroblasts modulates the oncogenic potential of adjacent epithelia (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-07
    Description: Stromal cells can have a significant impact on the carcinogenic process in adjacent epithelia. The role of transforming growth factor-beta (TGF-beta) signaling in such epithelial-mesenchymal interactions was determined by conditional inactivation of the TGF-beta type II receptor gene in mouse fibroblasts (Tgfbr2fspKO). The loss of TGF-beta responsiveness in fibroblasts resulted in intraepithelial neoplasia in prostate and invasive squamous cell carcinoma of the forestomach, both associated with an increased abundance of stromal cells. Activation of paracrine hepatocyte growth factor (HGF) signaling was identified as one possible mechanism for stimulation of epithelial proliferation. Thus, TGF-beta signaling in fibroblasts modulates the growth and oncogenic potential of adjacent epithelia in selected tissues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bhowmick, Neil A -- Chytil, Anna -- Plieth, David -- Gorska, Agnieszka E -- Dumont, Nancy -- Shappell, Scott -- Washington, M Kay -- Neilson, Eric G -- Moses, Harold L -- AR41943/AR/NIAMS NIH HHS/ -- CA102162/CA/NCI NIH HHS/ -- CA68485/CA/NCI NIH HHS/ -- CA85492/CA/NCI NIH HHS/ -- DK46282/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2004 Feb 6;303(5659):848-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14764882" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinoma, Squamous Cell/etiology/metabolism/pathology ; Cell Division ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Epithelial Cells/*physiology ; Female ; Fibroblasts/*physiology ; Hepatocyte Growth Factor/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Neoplasms, Glandular and Epithelial/*etiology/metabolism/pathology ; Prostate/cytology/metabolism/pathology ; Prostatic Intraepithelial Neoplasia/etiology/metabolism/pathology ; Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins c-met/metabolism ; Receptors, Transforming Growth Factor beta/genetics/metabolism ; Recombination, Genetic ; *Signal Transduction ; Stomach/cytology/metabolism/pathology ; Stomach Neoplasms/etiology/metabolism/pathology ; Stromal Cells/*physiology ; Transforming Growth Factor beta/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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