Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1979-9-1
pubmed:abstractText
The biologic activities of helper T cell-replacing factors derived from concanavalin A-stimulated murine T cells (TRF-T) and from lipopolysaccharide-activated macrophages (TFR-M) have been compared. TRF-T stimulates immune responses to heterologous erythrocyte antigens (SRBC and BRBC) in T cell-depleted spleen cultures but not in macrophage-depleted spleen cultures. TRF-M stimulates immune responses in both T cell-depleted and macrophage-depleted spleen cultures. Under conditions where LPS stimulates the release of TRF-M from cultures of activated macrophages, TRF-t has no effect on TFR-M production. Thus. TRF-T does not appear to function by stimulating the release of TRF-M from macrophages. In macrophage-depleted spleen cultures, saturating concentrations of TRF-T and TRF-M when mixed together exhibit striking synergistic effects on the induction of immune responses to erythrocyte antigens. The kinetics of the synergistic effects of TRF-M and TRF-T are consistent with an effect of TRF-M on the production of TRF-T sensitive B cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:volume
122
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1371-5
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Helper T cell-replacing factors secreted by thymus-derived cells and macrophages: cellular requirements for B cell activation and synergistic properties.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.