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  • 1
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    Close Cassini flybys of Saturns ring moons Pan, Daphnis, Atlas, Pandora, and Epimetheus (2019)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2019
    Description: 〈p〉Saturn’s main ring system is associated with a set of small moons that are either embedded within it, or interact with the rings to alter their shape and composition. Five close flybys of the moons Pan, Daphnis, Atlas, Pandora, and Epimetheus were performed between December 2016 and April 2017 during the Ring-grazing Orbits of the Cassini mission. Data on the moons’ morphology, structure, particle environment, and composition were returned, along with images in the ultraviolet and thermal infrared. The optical properties of the moons’ surfaces are determined by two competing processes: contamination by a red material formed in Saturn’s main ring system, and by accretion of bright icy particles or water vapor from volcanic plumes originating on the planet’s moon Enceladus.〈/p〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Natural Sciences in General
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  • 2
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    Close Cassini flybys of Saturns ring moons Pan, Daphnis, Atlas, Pandora, and Epimetheus (2019)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2019
    Description: 〈p〉Saturn’s main ring system is associated with a set of small moons that either are embedded within it or interact with the rings to alter their shape and composition. Five close flybys of the moons Pan, Daphnis, Atlas, Pandora, and Epimetheus were performed between December 2016 and April 2017 during the ring-grazing orbits of the Cassini mission. Data on the moons’ morphology, structure, particle environment, and composition were returned, along with images in the ultraviolet and thermal infrared. We find that the optical properties of the moons’ surfaces are determined by two competing processes: contamination by a red material formed in Saturn’s main ring system and accretion of bright icy particles or water vapor from volcanic plumes originating on the moon Enceladus.〈/p〉
    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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  • 3
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    Gating of CaMKII by cAMP-regulated protein phosphatase activity during LTP (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-06-25
    Description: Long-term potentiation (LTP) at the Schaffer collateral-CA1 synapse involves interacting signaling components, including calcium (Ca2+)/calmodulin-dependent protein kinase II (CaMKII) and cyclic adenosine monophosphate (cAMP) pathways. Postsynaptic injection of thiophosphorylated inhibitor-1 protein, a specific inhibitor of protein phosphatase-1 (PP1), substituted for cAMP pathway activation in LTP. Stimulation that induced LTP triggered cAMP-dependent phosphorylation of endogenous inhibitor-1 and a decrease in PP1 activity. This stimulation also increased phosphorylation of CaMKII at Thr286 and Ca2+-independent CaMKII activity in a cAMP-dependent manner. The blockade of LTP by a CaMKII inhibitor was not overcome by thiophosphorylated inhibitor-1. Thus, the cAMP pathway uses PP1 to gate CaMKII signaling in LTP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blitzer, R D -- Connor, J H -- Brown, G P -- Wong, T -- Shenolikar, S -- Iyengar, R -- Landau, E M -- DK52054/DK/NIDDK NIH HHS/ -- GM54508/GM/NIGMS NIH HHS/ -- NS33646/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jun 19;280(5371):1940-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Bronx VA Medical Center and Department of Psychiatry, Mount Sinai School of Medicine, New York, NY 10029, USA. rb2@doc.mssm.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9632393" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/*metabolism ; *Carrier Proteins ; Cyclic AMP/analogs & derivatives/*metabolism/pharmacology ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Electric Stimulation ; Enzyme Inhibitors/metabolism/pharmacology ; Hippocampus/*metabolism ; In Vitro Techniques ; *Intracellular Signaling Peptides and Proteins ; *Long-Term Potentiation ; Male ; Phosphoprotein Phosphatases/antagonists & inhibitors/*metabolism ; Phosphorylation ; Protein Phosphatase 1 ; RNA-Binding Proteins/metabolism/pharmacology ; Rats ; Rats, Sprague-Dawley ; Signal Transduction ; Synapses/*metabolism ; Thionucleotides/pharmacology
    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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  • 4
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    Fatal familial insomnia and familial Creutzfeldt-Jakob disease: disease phenotype determined by a DNA polymorphism (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-10-30
    Description: Fatal familial insomnia (FFI) and a subtype of familial Creutzfeldt-Jakob disease (CJD), two clinically and pathologically distinct diseases, are linked to the same mutation at codon 178 (Asn178) of the prion protein gene. The possibility that a second genetic component modified the phenotypic expression of the Asn178 mutation was investigated. FFI and the familial CJD subtype segregated with different genotypes determined by the Asn178 mutation and the methionine-valine polymorphism at codon 129. The Met129, Asn178 allele segregated with FFI in all 15 affected members of five kindreds whereas the Val129, Asn178 allele segregated with the familial CJD subtype in all 15 affected members of six kindreds. Thus, two distinct disease phenotypes linked to a single pathogenic mutation can be determined by a common polymorphism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldfarb, L G -- Petersen, R B -- Tabaton, M -- Brown, P -- LeBlanc, A C -- Montagna, P -- Cortelli, P -- Julien, J -- Vital, C -- Pendelbury, W W -- 1 R01 AGNS08155-02/AG/NIA NIH HHS/ -- AG-08012-02/AG/NIA NIH HHS/ -- NS 14509-13/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1992 Oct 30;258(5083):806-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Central Nervous System Studies, National Institute of Neurological Diseases and Stroke, National Institutes of Health, Bethesda, Maryland 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1439789" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Asparagine/genetics ; Chromosomes, Human, Pair 20 ; Codon ; Creutzfeldt-Jakob Syndrome/*genetics ; DNA/*genetics ; Genotype ; Humans ; Middle Aged ; *Mutation ; *Phenotype ; *Polymorphism, Genetic ; Prion Diseases/*genetics ; Prions/genetics ; Valine/genetics
    Print ISSN: 0036-8075
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  • 5
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    Bypass of senescence after disruption of p21CIP1/WAF1 gene in normal diploid human fibroblasts (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-08-08
    Description: Most somatic cells die after a finite number of cell divisions, a phenomenon described as senescence. The p21(CIP1/WAF1) gene encodes an inhibitor of cyclin-dependent kinases. Inactivation of p21 by two sequential rounds of targeted homologous recombination was sufficient to bypass senescence in normal diploid human fibroblasts. At the checkpoint between the prereplicative phase of growth and the phase of chromosome replication, cells lacking p21 failed to arrest the cell cycle in response to DNA damage, but their apoptotic response and genomic stability were unaltered. These results establish the feasibility of using gene targeting for genetic studies of normal human cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, J P -- Wei, W -- Sedivy, J M -- GM41690/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1997 Aug 8;277(5327):831-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02912, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9242615" target="_blank"〉PubMed〈/a〉
    Keywords: Apoptosis ; Aspartate Carbamoyltransferase/genetics ; Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)/genetics ; Cell Aging/*genetics ; Cell Division ; Cells, Cultured ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclins/*genetics/physiology ; DNA Damage ; Dihydroorotase/genetics ; Electroporation ; Fibroblasts ; G1 Phase ; *Gene Deletion ; Gene Targeting ; Genetic Vectors ; Humans ; Multienzyme Complexes/genetics ; Telomere/physiology
    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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  • 6
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    The brain of LB1, Homo floresiensis (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-03-08
    Description: The brain of Homo floresiensis was assessed by comparing a virtual endocast from the type specimen (LB1) with endocasts from great apes, Homo erectus, Homo sapiens, a human pygmy, a human microcephalic, specimen number Sts 5 (Australopithecus africanus), and specimen number WT 17000 (Paranthropus aethiopicus). Morphometric, allometric, and shape data indicate that LB1 is not a microcephalic or pygmy. LB1's brain/body size ratio scales like that of an australopithecine, but its endocast shape resembles that of Homo erectus. LB1 has derived frontal and temporal lobes and a lunate sulcus in a derived position, which are consistent with capabilities for higher cognitive processing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falk, Dean -- Hildebolt, Charles -- Smith, Kirk -- Morwood, M J -- Sutikna, Thomas -- Brown, Peter -- Jatmiko -- Saptomo, E Wayhu -- Brunsden, Barry -- Prior, Fred -- New York, N.Y. -- Science. 2005 Apr 8;308(5719):242-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Anthropology, Florida State University, Tallahassee, FL 32306, USA dfalk@fsu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15749690" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/*anatomy & histology ; Cephalometry ; Computer Simulation ; Female ; Hominidae/*anatomy & histology/classification ; Humans ; Organ Size ; Pan troglodytes/anatomy & histology ; Tomography, X-Ray Computed
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  • 7
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    Requirement for p53 and p21 to sustain G2 arrest after DNA damage (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-20
    Description: After DNA damage, many cells appear to enter a sustained arrest in the G2 phase of the cell cycle. It is shown here that this arrest could be sustained only when p53 was present in the cell and capable of transcriptionally activating the cyclin-dependent kinase inhibitor p21. After disruption of either the p53 or the p21 gene, gamma radiated cells progressed into mitosis and exhibited a G2 DNA content only because of a failure of cytokinesis. Thus, p53 and p21 appear to be essential for maintaining the G2 checkpoint in human cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bunz, F -- Dutriaux, A -- Lengauer, C -- Waldman, T -- Zhou, S -- Brown, J P -- Sedivy, J M -- Kinzler, K W -- Vogelstein, B -- CA 43460/CA/NCI NIH HHS/ -- CA 57345/CA/NCI NIH HHS/ -- CA 62924/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Nov 20;282(5393):1497-501.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Howard Hughes Medical Institute and The Johns Hopkins Oncology Center, 424 North Bond Street, Baltimore, MD 21231, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9822382" target="_blank"〉PubMed〈/a〉
    Keywords: Apoptosis ; CDC2 Protein Kinase/antagonists & inhibitors/metabolism ; Cell Line ; Cyclin B/metabolism ; Cyclin B1 ; Cyclin-Dependent Kinase Inhibitor p21 ; Cyclins/genetics/*physiology ; DNA/analysis ; *DNA Damage ; *G2 Phase/drug effects ; Gamma Rays ; Gene Expression Regulation ; Genes, p53 ; Humans ; Mitosis ; Mutation ; Nocodazole/pharmacology ; Tumor Cells, Cultured ; Tumor Suppressor Protein p53/*physiology
    Print ISSN: 0036-8075
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  • 8
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    Genetic properties of the maize nested association mapping population (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-08-08
    Description: Maize genetic diversity has been used to understand the molecular basis of phenotypic variation and to improve agricultural efficiency and sustainability. We crossed 25 diverse inbred maize lines to the B73 reference line, capturing a total of 136,000 recombination events. Variation for recombination frequencies was observed among families, influenced by local (cis) genetic variation. We identified evidence for numerous minor single-locus effects but little two-locus linkage disequilibrium or segregation distortion, which indicated a limited role for genes with large effects and epistatic interactions on fitness. We observed excess residual heterozygosity in pericentromeric regions, which suggested that selection in inbred lines has been less efficient in these regions because of reduced recombination frequency. This implies that pericentromeric regions may contribute disproportionally to heterosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McMullen, Michael D -- Kresovich, Stephen -- Villeda, Hector Sanchez -- Bradbury, Peter -- Li, Huihui -- Sun, Qi -- Flint-Garcia, Sherry -- Thornsberry, Jeffry -- Acharya, Charlotte -- Bottoms, Christopher -- Brown, Patrick -- Browne, Chris -- Eller, Magen -- Guill, Kate -- Harjes, Carlos -- Kroon, Dallas -- Lepak, Nick -- Mitchell, Sharon E -- Peterson, Brooke -- Pressoir, Gael -- Romero, Susan -- Oropeza Rosas, Marco -- Salvo, Stella -- Yates, Heather -- Hanson, Mark -- Jones, Elizabeth -- Smith, Stephen -- Glaubitz, Jeffrey C -- Goodman, Major -- Ware, Doreen -- Holland, James B -- Buckler, Edward S -- New York, N.Y. -- Science. 2009 Aug 7;325(5941):737-40. doi: 10.1126/science.1174320.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉United States Department of Agriculture-Agriculture Research Service (USDA-ARS), USA. mcmullenm@missouri.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19661427" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Centromere/genetics ; *Chromosome Mapping ; Chromosomes, Plant/*genetics ; Crosses, Genetic ; Epistasis, Genetic ; Flowers/genetics/growth & development ; *Genetic Variation ; Genome, Plant ; Heterozygote ; Hybrid Vigor ; Inbreeding ; Linkage Disequilibrium ; Phenotype ; Polymorphism, Single Nucleotide ; Quantitative Trait Loci ; *Quantitative Trait, Heritable ; Recombination, Genetic ; Selection, Genetic ; Zea mays/classification/*genetics/physiology
    Print ISSN: 0036-8075
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  • 9
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    Protective efficacy of adenovirus/protein vaccines against SIV challenges in rhesus monkeys (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-07-04
    Description: Preclinical studies of viral vector-based HIV-1 vaccine candidates have previously shown partial protection against neutralization-resistant virus challenges in rhesus monkeys. In this study, we evaluated the protective efficacy of adenovirus serotype 26 (Ad26) vector priming followed by purified envelope (Env) glycoprotein boosting. Rhesus monkeys primed with Ad26 vectors expressing SIVsmE543 Env, Gag, and Pol and boosted with AS01B-adjuvanted SIVmac32H Env gp140 demonstrated complete protection in 50% of vaccinated animals against a series of repeated, heterologous, intrarectal SIVmac251 challenges that infected all controls. Protective efficacy correlated with the functionality of Env-specific antibody responses. Comparable protection was also observed with a similar Ad/Env vaccine against repeated, heterologous, intrarectal SHIV-SF162P3 challenges. These data demonstrate robust protection by Ad/Env vaccines against acquisition of neutralization-resistant virus challenges in rhesus monkeys.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4653134/" 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/PMC4653134/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barouch, Dan H -- Alter, Galit -- Broge, Thomas -- Linde, Caitlyn -- Ackerman, Margaret E -- Brown, Eric P -- Borducchi, Erica N -- Smith, Kaitlin M -- Nkolola, Joseph P -- Liu, Jinyan -- Shields, Jennifer -- Parenteau, Lily -- Whitney, James B -- Abbink, Peter -- Ng'ang'a, David M -- Seaman, Michael S -- Lavine, Christy L -- Perry, James R -- Li, Wenjun -- Colantonio, Arnaud D -- Lewis, Mark G -- Chen, Bing -- Wenschuh, Holger -- Reimer, Ulf -- Piatak, Michael -- Lifson, Jeffrey D -- Handley, Scott A -- Virgin, Herbert W -- Koutsoukos, Marguerite -- Lorin, Clarisse -- Voss, Gerald -- Weijtens, Mo -- Pau, Maria G -- Schuitemaker, Hanneke -- AI060354/AI/NIAID NIH HHS/ -- AI078526/AI/NIAID NIH HHS/ -- AI080289/AI/NIAID NIH HHS/ -- AI084794/AI/NIAID NIH HHS/ -- AI095985/AI/NIAID NIH HHS/ -- AI096040/AI/NIAID NIH HHS/ -- AI102660/AI/NIAID NIH HHS/ -- AI102691/AI/NIAID NIH HHS/ -- OD011170/OD/NIH HHS/ -- P30 AI060354/AI/NIAID NIH HHS/ -- R01 AI080289/AI/NIAID NIH HHS/ -- R01 AI084794/AI/NIAID NIH HHS/ -- R01 AI102660/AI/NIAID NIH HHS/ -- R01 AI102691/AI/NIAID NIH HHS/ -- R01 OD011170/OD/NIH HHS/ -- R37 AI080289/AI/NIAID NIH HHS/ -- U19 AI078526/AI/NIAID NIH HHS/ -- U19 AI095985/AI/NIAID NIH HHS/ -- U19 AI096040/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2015 Jul 17;349(6245):320-4. doi: 10.1126/science.aab3886. Epub 2015 Jul 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA. Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Cambridge, MA 02139, USA. dbarouch@bidmc.harvard.edu. ; Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology, and Harvard University, Cambridge, MA 02139, USA. ; Thayer School of Engineering at Dartmouth, Hanover, NH 03755, USA. ; Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA. ; University of Massachusetts Medical School, Worcester, MA 01605, USA. ; New England Primate Research Center, Southborough, MA 01772, USA. ; Bioqual, Rockville, MD 20852, USA. ; Children's Hospital, Boston, MA 02115, USA. ; JPT Peptide Technologies GmbH, 12489 Berlin, Germany. ; AIDS and Cancer Virus Program, Leidos Biomedical Research, Frederick National Laboratory, Frederick, MD 21702, USA. ; Washington University School of Medicine, St. Louis, MO 63110, USA. ; GSK Vaccines, 1330 Rixensart, Belgium. ; Janssen Infectious Diseases and Vaccines (formerly Crucell), 2301 Leiden, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26138104" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/*immunology ; Adenovirus Vaccines/*immunology ; Adoptive Transfer ; Animals ; Antibodies, Neutralizing/immunology ; Female ; Gene Products, env/*immunology ; Gene Products, gag/immunology ; Gene Products, pol/immunology ; Genetic Vectors/immunology ; HIV-1/*immunology ; Histocompatibility Antigens Class I/genetics/immunology ; Immunization, Secondary ; Macaca mulatta ; Male ; SAIDS Vaccines/*immunology ; Simian Acquired Immunodeficiency Syndrome/*prevention & control ; Simian Immunodeficiency Virus/immunology
    Print ISSN: 0036-8075
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  • 10
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    Long-latency "subthreshold" collicular responses to the constant-frequency components emitted by a bat (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-12-01
    Description: A previously undescribed response pattern has been observed in certain single units in the posterior colliculus of Pteronotus suapurensis. These units, constituting about one-third of those tuned to the region of the dominant constant-frequency (CF) components of the orientation sounds, respond to a tone pip with a burst of spikes at a latency of 3 to 6 milliseconds, within the frequency-intensity domain of a normal V-shaped response area. In these units, however, as intensity is dropped below threshold for this response, a response of 5-to 10-milliseconds longer latency appears and persists throughout another 10 to 30 decibels of attenuation. These late responses can be very vigorous, are sharply tuned to frequencies at or just above the CF components of the signal, and are often strongest and of lowest threshold at stimulus durations of 1.5 to 3 milliseconds--approximately the duration of the CF component. These properties imply that the late responses are concerned with analysis of the CF components of echoes, apparently in ways not as prominent in other bats.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grinnell, A D -- Brown, P -- New York, N.Y. -- Science. 1978 Dec 1;202(4371):996-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715456" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Auditory Pathways/*physiology ; Auditory Perception/*physiology ; Auditory Threshold/physiology ; Chiroptera/*physiology ; Echolocation/*physiology ; Inferior Colliculi/*physiology ; Orientation/*physiology
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