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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1982-6-21
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pubmed:abstractText |
Concanavalin A (Con A) stimulation of T lymphocytes for 48 h induced a dose-dependent increase in the percentage of T gamma cells, and proliferation of these cells was dependent on pre-existing T gamma cells. Con A stimulation also induced a dose-dependent increase in suppressor cell activity as measured in a Con A/mixed lymphocyte culture assay. Removal of T gamma cells before stimulation with Con A did not influence suppressor cell activity, whereas depletion of T gamma cells after Con A stimulation significantly reduced the suppression. Treatment of T lymphocytes with monoclonal anti-HLA-DR antibodies and complement significantly increased the percentage of T gamma cells and also increased the suppressor cell activity, both when the cells were treated before and when they were treated after Con A stimulation. Similarly, increased suppressor cell activity was also seen when T mu cells were removed. The results indicate that Con-A-induced suppressor cells are recruited from both T gamma and T non-gamma cells and also suggest that most of the Con-A-induced suppressor cell activity is exerted by HLA-DR-negative cells.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
0300-9475
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
15
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
87-95
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6461918-Animals,
pubmed-meshheading:6461918-Cell Separation,
pubmed-meshheading:6461918-Concanavalin A,
pubmed-meshheading:6461918-Cytotoxicity Tests, Immunologic,
pubmed-meshheading:6461918-Dose-Response Relationship, Immunologic,
pubmed-meshheading:6461918-Histocompatibility Antigens Class II,
pubmed-meshheading:6461918-Humans,
pubmed-meshheading:6461918-Lymphocyte Activation,
pubmed-meshheading:6461918-Lymphocyte Culture Test, Mixed,
pubmed-meshheading:6461918-Rabbits,
pubmed-meshheading:6461918-Receptors, Antigen, B-Cell,
pubmed-meshheading:6461918-Receptors, Fc,
pubmed-meshheading:6461918-Rosette Formation,
pubmed-meshheading:6461918-T-Lymphocytes,
pubmed-meshheading:6461918-T-Lymphocytes, Regulatory
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pubmed:year |
1982
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pubmed:articleTitle |
Concanavalin A induces suppressor cell activity in both T gamma and T non-gamma cells: most of the suppressor cells do not carry HLA-DR antigens.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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