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  • 1
    Publication Date: 2021-05-19
    Description: The anthropogenic affectation was evaluated on the coast N of the Gulf of Batabanó in May 2003 (corresponding to the provinces of Matanzas and Havana), in areas located in the line of the coast. The results were compared with the historical information of the sector. In the coast N and the Ensenada of the Broa, the parameters oxygen saturation, DBO5 and DQO showed characteristic high values of eutrofication. The biggest contribution in the Cianoficies was in the near coastal areas to sources of organic contamination. In the case of the nutrients they show specific data of mesothrofic waters with tendency to the eutrofization and the silts presented a high affectation for toxic metals. The area near to Guanímar is distinguished to present conditions of organic contamination that favor heterothrofic conditions, corroborated by a prevalence of the processes of mineralization of the organic matter over primary production and lows values of fitoplankton concentration. On the contrary, in the region of Surgidero of Batabanó, the processes of synthesis of organic matter prevail suggested by a high primary production, and concentration of fitoplankton, with low breathing levels and mineralization of the organic matter, that indicates that the system is behaving autothrofically. In a general way, this sector is very affected by the anthropogenic impact. The information obtained is of great importance for the development of the fishing and tourist industries in the area.
    Description: Published
    Keywords: Phytoplankton ; Water quality ; Primary production ; Chemistry ; Environmental monitoring ; Phytoplankton ; Water quality ; Primary production ; Chemistry ; Environmental monitoring
    Repository Name: AquaDocs
    Type: Proceedings Paper
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  • 2
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    Nature Publishing Group (NPG)
    Publication Date: 2008-03-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shadan, Sadaf -- England -- Nature. 2008 Mar 20;452(7185):296. doi: 10.1038/452296b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18354470" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthelmintics/*pharmacology/therapeutic use/toxicity ; Antioxidants/metabolism ; Cell Line ; *Drug Evaluation, Preclinical ; Drug Resistance ; Humans ; Mice ; Oxadiazoles/*pharmacology/toxicity ; Praziquantel/pharmacology/therapeutic use/toxicity ; Schistosoma mansoni/drug effects/metabolism ; Schistosomiasis/*drug therapy/*parasitology
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2008-11-28
    Description: Major histocompatibility complex (MHC) class II alleles HLA-DQ8 and the mouse homologue I-A(g7) lacking a canonical aspartic acid residue at position beta57 are associated with coeliac disease and type I diabetes. However, the role of this single polymorphism in disease initiation and progression remains poorly understood. The lack of Asp 57 creates a positively charged P9 pocket, which confers a preference for negatively charged peptides. Gluten lacks such peptides, but tissue transglutaminase (TG2) introduces negatively charged residues at defined positions into gluten T-cell epitopes by deamidating specific glutamine residues on the basis of their spacing to proline residues. The commonly accepted model, proposing that HLA-DQ8 simply favours binding of negatively charged peptides, does not take into account the fact that TG2 requires inflammation for activation and that T-cell responses against native gluten peptides are found, particularly in children. Here we show that beta57 polymorphism promotes the recruitment of T-cell receptors bearing a negative signature charge in the complementary determining region 3beta (CDR3beta) during the response against native gluten peptides presented by HLA-DQ8 in coeliac disease. These T cells showed a crossreactive and heteroclitic (stronger) response to deamidated gluten peptides. Furthermore, gluten peptide deamidation extended the T-cell-receptor repertoire by relieving the requirement for a charged residue in CDR3beta. Thus, the lack of a negative charge at position beta57 in MHC class II was met by negatively charged residues in the T-cell receptor or in the peptide, the combination of which might explain the role of HLA-DQ8 in amplifying the T-cell response against dietary gluten.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3784325/" 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/PMC3784325/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hovhannisyan, Zaruhi -- Weiss, Angela -- Martin, Alexandra -- Wiesner, Martina -- Tollefsen, Stig -- Yoshida, Kenji -- Ciszewski, Cezary -- Curran, Shane A -- Murray, Joseph A -- David, Chella S -- Sollid, Ludvig M -- Koning, Frits -- Teyton, Luc -- Jabri, Bana -- DK42086/DK/NIDDK NIH HHS/ -- DK55037/DK/NIDDK NIH HHS/ -- DK67180/DK/NIDDK NIH HHS/ -- R01 DK067180/DK/NIDDK NIH HHS/ -- R01 DK067180-04/DK/NIDDK NIH HHS/ -- England -- Nature. 2008 Nov 27;456(7221):534-8. doi: 10.1038/nature07524.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Pathology, Pediatrics and Committee of Immunology, University of Chicago, Chicago, Illinois 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19037317" target="_blank"〉PubMed〈/a〉
    Keywords: Amides/chemistry ; Animals ; CD4-Positive T-Lymphocytes/*immunology ; Celiac Disease/*genetics/*immunology ; Complementarity Determining Regions/chemistry/immunology ; Cross Reactions ; Epitopes, T-Lymphocyte/chemistry/immunology ; Gliadin/chemistry/immunology ; Glutens/chemistry/*immunology ; HLA-DQ Antigens/chemistry/*genetics/immunology ; Humans ; Hybridomas/immunology ; Mice ; Mice, Transgenic ; Polymorphism, Genetic/*genetics ; Receptors, Antigen, T-Cell/chemistry/immunology ; Static Electricity
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  • 4
    Publication Date: 2008-05-30
    Description: As alterations in tissue pH underlie many pathological processes, the capability to image tissue pH in the clinic could offer new ways of detecting disease and response to treatment. Dynamic nuclear polarization is an emerging technique for substantially increasing the sensitivity of magnetic resonance imaging experiments. Here we show that tissue pH can be imaged in vivo from the ratio of the signal intensities of hyperpolarized bicarbonate (H(13)CO(3)(-)) and (13)CO(2) following intravenous injection of hyperpolarized H(13)CO(3)(-). The technique was demonstrated in a mouse tumour model, which showed that the average tumour interstitial pH was significantly lower than the surrounding tissue. Given that bicarbonate is an endogenous molecule that can be infused in relatively high concentrations into patients, we propose that this technique could be used clinically to image pathological processes that are associated with alterations in tissue pH, such as cancer, ischaemia and inflammation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gallagher, Ferdia A -- Kettunen, Mikko I -- Day, Sam E -- Hu, De-En -- Ardenkjaer-Larsen, Jan Henrik -- Zandt, Rene in 't -- Jensen, Pernille R -- Karlsson, Magnus -- Golman, Klaes -- Lerche, Mathilde H -- Brindle, Kevin M -- C197/A3514/Cancer Research UK/United Kingdom -- England -- Nature. 2008 Jun 12;453(7197):940-3. doi: 10.1038/nature07017. Epub 2008 May 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18509335" target="_blank"〉PubMed〈/a〉
    Keywords: Acid-Base Equilibrium ; Animals ; Bicarbonates/*metabolism ; Carbon Dioxide/metabolism ; Carbon Isotopes ; Carbonic Anhydrases/metabolism ; Catalysis ; Hydrogen-Ion Concentration ; Lymphoma/*diagnosis/*metabolism/pathology ; Magnetic Resonance Imaging/*methods ; Mice ; Neoplasm Transplantation ; Phantoms, Imaging
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
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    Nature Publishing Group (NPG)
    Publication Date: 2008-01-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pera, Martin F -- England -- Nature. 2008 Jan 10;451(7175):135-6. doi: 10.1038/451135a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18185576" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Cell Differentiation ; Embryonic Stem Cells/*cytology/metabolism ; Fetus/cytology ; Fibroblasts/cytology ; HMGB Proteins/genetics/metabolism ; Humans ; Kruppel-Like Transcription Factors/genetics/metabolism ; Mice ; Octamer Transcription Factor-3/genetics/metabolism ; Pluripotent Stem Cells/*cytology/*metabolism ; Proto-Oncogene Proteins c-myc/genetics/metabolism ; SOXB1 Transcription Factors ; Transcription Factors/genetics/metabolism
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  • 6
    Publication Date: 2008-06-24
    Description: The transcription factor IRF4 (interferon regulatory factor 4) is required during an immune response for lymphocyte activation and the generation of immunoglobulin-secreting plasma cells. Multiple myeloma, a malignancy of plasma cells, has a complex molecular aetiology with several subgroups defined by gene expression profiling and recurrent chromosomal translocations. Moreover, the malignant clone can sustain multiple oncogenic lesions, accumulating genetic damage as the disease progresses. Current therapies for myeloma can extend survival but are not curative. Hence, new therapeutic strategies are needed that target molecular pathways shared by all subtypes of myeloma. Here we show, using a loss-of-function, RNA-interference-based genetic screen, that IRF4 inhibition is toxic to myeloma cell lines, regardless of transforming oncogenic mechanism. Gene expression profiling and genome-wide chromatin immunoprecipitation analysis uncovered an extensive network of IRF4 target genes and identified MYC as a direct target of IRF4 in activated B cells and myeloma. Unexpectedly, IRF4 was itself a direct target of MYC transactivation, generating an autoregulatory circuit in myeloma cells. Although IRF4 is not genetically altered in most myelomas, they are nonetheless addicted to an aberrant IRF4 regulatory network that fuses the gene expression programmes of normal plasma cells and activated B cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2542904/" 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/PMC2542904/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shaffer, Arthur L -- Emre, N C Tolga -- Lamy, Laurence -- Ngo, Vu N -- Wright, George -- Xiao, Wenming -- Powell, John -- Dave, Sandeep -- Yu, Xin -- Zhao, Hong -- Zeng, Yuxin -- Chen, Bangzheng -- Epstein, Joshua -- Staudt, Louis M -- CA113992/CA/NCI NIH HHS/ -- CA97513/CA/NCI NIH HHS/ -- R01 CA113992/CA/NCI NIH HHS/ -- R01 CA113992-02/CA/NCI NIH HHS/ -- R33 CA097513-03/CA/NCI NIH HHS/ -- Z99 CA999999/Intramural NIH HHS/ -- England -- Nature. 2008 Jul 10;454(7201):226-31. doi: 10.1038/nature07064. Epub 2008 Jun 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Metabolism Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18568025" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/metabolism/pathology ; Cell Survival ; Cell Transformation, Neoplastic/genetics ; Cells, Cultured ; Chromatin Immunoprecipitation ; Gene Expression Profiling ; Gene Expression Regulation, Neoplastic ; Genes, myc/genetics ; Humans ; Interferon Regulatory Factors/deficiency/genetics/*metabolism ; Mice ; Multiple Myeloma/genetics/*metabolism/*pathology ; Proto-Oncogene Proteins c-myc/metabolism ; RNA Interference ; Transcriptional Activation
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  • 7
    Publication Date: 2008-09-12
    Description: Cell growth and proliferation require coordinated ribosomal biogenesis and translation. Eukaryotic initiation factors (eIFs) control translation at the rate-limiting step of initiation. So far, only two eIFs connect extracellular stimuli to global translation rates: eIF4E acts in the eIF4F complex and regulates binding of capped messenger RNA to 40S subunits, downstream of growth factors, and eIF2 controls loading of the ternary complex on the 40S subunit and is inhibited on stress stimuli. No eIFs have been found to link extracellular stimuli to the activity of the large 60S ribosomal subunit. eIF6 binds 60S ribosomes precluding ribosome joining in vitro. However, studies in yeasts showed that eIF6 is required for ribosome biogenesis rather than translation. Here we show that mammalian eIF6 is required for efficient initiation of translation, in vivo. eIF6 null embryos are lethal at preimplantation. Heterozygous mice have 50% reduction of eIF6 levels in all tissues, and show reduced mass of hepatic and adipose tissues due to a lower number of cells and to impaired G1/S cell cycle progression. eIF6(+/-) cells retain sufficient nucleolar eIF6 and normal ribosome biogenesis. The liver of eIF6(+/-) mice displays an increase of 80S in polysomal profiles, indicating a defect in initiation of translation. Consistently, isolated hepatocytes have impaired insulin-stimulated translation. Heterozygous mouse embryonic fibroblasts recapitulate the organism phenotype and have normal ribosome biogenesis, reduced insulin-stimulated translation, and delayed G1/S phase progression. Furthermore, eIF6(+/-) cells are resistant to oncogene-induced transformation. Thus, eIF6 is the first eIF associated with the large 60S subunit that regulates translation in response to extracellular signals.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2753212/" 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/PMC2753212/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gandin, Valentina -- Miluzio, Annarita -- Barbieri, Anna Maria -- Beugnet, Anne -- Kiyokawa, Hiroaki -- Marchisio, Pier Carlo -- Biffo, Stefano -- GGP05043/Telethon/Italy -- R01/PHS HHS/ -- R01 CA112282/CA/NCI NIH HHS/ -- R01 CA112282-04/CA/NCI NIH HHS/ -- England -- Nature. 2008 Oct 2;455(7213):684-8. doi: 10.1038/nature07267. Epub 2008 Sep 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Histology and Cell Growth Laboratory, San Raffaele Science Institute, Via Olgettina 58, 20132 Milan, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18784653" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/cytology ; Animals ; Body Weight ; Cell Division/drug effects ; Cell Nucleolus/metabolism ; *Cell Transformation, Neoplastic ; Cells, Cultured ; Cytoplasm/metabolism ; Fibroblasts ; G1 Phase/drug effects ; Heterozygote ; Insulin/pharmacology ; Liver/cytology/growth & development ; Mice ; NIH 3T3 Cells ; Oncogenes/genetics ; *Peptide Chain Initiation, Translational/drug effects ; Peptide Initiation Factors/deficiency/genetics/*metabolism ; Ribosomes/chemistry/metabolism ; *S Phase/drug effects
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  • 8
    Publication Date: 2008-03-28
    Description: Although information storage in the central nervous system is thought to be primarily mediated by various forms of synaptic plasticity, other mechanisms, such as modifications in membrane excitability, are available. Local dendritic spikes are nonlinear voltage events that are initiated within dendritic branches by spatially clustered and temporally synchronous synaptic input. That local spikes selectively respond only to appropriately correlated input allows them to function as input feature detectors and potentially as powerful information storage mechanisms. However, it is currently unknown whether any effective form of local dendritic spike plasticity exists. Here we show that the coupling between local dendritic spikes and the soma of rat hippocampal CA1 pyramidal neurons can be modified in a branch-specific manner through an N-methyl-d-aspartate receptor (NMDAR)-dependent regulation of dendritic Kv4.2 potassium channels. These data suggest that compartmentalized changes in branch excitability could store multiple complex features of synaptic input, such as their spatio-temporal correlation. We propose that this 'branch strength potentiation' represents a previously unknown form of information storage that is distinct from that produced by changes in synaptic efficacy both at the mechanistic level and in the type of information stored.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Losonczy, Attila -- Makara, Judit K -- Magee, Jeffrey C -- England -- Nature. 2008 Mar 27;452(7186):436-41. doi: 10.1038/nature06725.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Janelia Farm Research Campus, 19700 Helix Dr Ashburn, Virginia 20147, USA. losonczya@janelia.hhmi.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18368112" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials/physiology ; Animals ; Cell Shape ; Dendrites/*physiology ; Ion Channel Gating ; Male ; Mice ; Models, Neurological ; Neuronal Plasticity/*physiology ; Pyramidal Cells/*cytology/*metabolism ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate/metabolism ; Shal Potassium Channels/deficiency/genetics/metabolism
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  • 9
    Publication Date: 2008-03-14
    Description: Many tumour cells have elevated rates of glucose uptake but reduced rates of oxidative phosphorylation. This persistence of high lactate production by tumours in the presence of oxygen, known as aerobic glycolysis, was first noted by Otto Warburg more than 75 yr ago. How tumour cells establish this altered metabolic phenotype and whether it is essential for tumorigenesis is as yet unknown. Here we show that a single switch in a splice isoform of the glycolytic enzyme pyruvate kinase is necessary for the shift in cellular metabolism to aerobic glycolysis and that this promotes tumorigenesis. Tumour cells have been shown to express exclusively the embryonic M2 isoform of pyruvate kinase. Here we use short hairpin RNA to knockdown pyruvate kinase M2 expression in human cancer cell lines and replace it with pyruvate kinase M1. Switching pyruvate kinase expression to the M1 (adult) isoform leads to reversal of the Warburg effect, as judged by reduced lactate production and increased oxygen consumption, and this correlates with a reduced ability to form tumours in nude mouse xenografts. These results demonstrate that M2 expression is necessary for aerobic glycolysis and that this metabolic phenotype provides a selective growth advantage for tumour cells in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Christofk, Heather R -- Vander Heiden, Matthew G -- Harris, Marian H -- Ramanathan, Arvind -- Gerszten, Robert E -- Wei, Ru -- Fleming, Mark D -- Schreiber, Stuart L -- Cantley, Lewis C -- R01 GM056203/GM/NIGMS NIH HHS/ -- T32 CA009172/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 Mar 13;452(7184):230-3. doi: 10.1038/nature06734.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Systems Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18337823" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing/*genetics ; Animals ; Cell Line, Tumor ; Cell Proliferation ; Fructosediphosphates/metabolism ; Gene Expression Regulation, Neoplastic ; Glycolysis ; Humans ; Lactic Acid/metabolism ; Lung Neoplasms/genetics/metabolism/pathology ; Male ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Neoplasms/enzymology/genetics/*metabolism/*pathology ; Oxidative Phosphorylation ; Oxygen Consumption ; Pyruvate Kinase/*genetics/*metabolism ; Pyruvic Acid/metabolism
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  • 10
    Publication Date: 2008-08-15
    Description: Furin is one of seven proprotein convertase family members that promote proteolytic maturation of proproteins. It is induced in activated T cells and is reported to process a variety of substrates including the anti-inflammatory cytokine transforming growth factor (TGF)-beta1 (refs 2-4), but the non-redundant functions of furin versus other proprotein convertases in T cells are unclear. Here we show that conditional deletion of furin in T cells allowed for normal T-cell development but impaired the function of regulatory and effector T cells, which produced less TGF-beta1. Furin-deficient T regulatory (Treg) cells were less protective in a T-cell transfer colitis model and failed to induce Foxp3 in normal T cells. Additionally, furin-deficient effector cells were inherently over-active and were resistant to suppressive activity of wild-type Treg cells. Thus, our results indicate that furin is indispensable in maintaining peripheral tolerance, which is due, at least in part, to its non-redundant, essential function in regulating TGF-beta1 production. Targeting furin has emerged as a strategy in malignant and infectious disease. Our results suggest that inhibiting furin might activate immune responses, but may result in a breakdown in peripheral tolerance.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2758057/" 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/PMC2758057/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pesu, Marko -- Watford, Wendy T -- Wei, Lai -- Xu, Lili -- Fuss, Ivan -- Strober, Warren -- Andersson, John -- Shevach, Ethan M -- Quezado, Martha -- Bouladoux, Nicolas -- Roebroek, Anton -- Belkaid, Yasmine -- Creemers, John -- O'Shea, John J -- Z99 EY999999/Intramural NIH HHS/ -- England -- Nature. 2008 Sep 11;455(7210):246-50. doi: 10.1038/nature07210.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Immunology and Inflammation Branch, National Institute for Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. pesum@mail.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18701887" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/immunology ; Antigens, CD4/immunology/metabolism ; Autoimmunity/immunology ; Colitis/immunology ; Furin/deficiency/genetics/*metabolism ; Gene Expression Profiling ; Immune Tolerance/*immunology ; Immunologic Memory/immunology ; Integrin alpha Chains/immunology ; Lymphocyte Activation/immunology ; Mice ; Mice, Inbred C57BL ; T-Lymphocytes/cytology/*enzymology/*immunology ; Thymus Gland/cytology/immunology ; Transforming Growth Factor beta1/biosynthesis/genetics/immunology
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