title: Activation requirements of cloned inducer T cells. II. The failure of some clones to respond to antigen presented by activated B cells.
abstract: Inducer/helper T cells recognize nominal antigen in association with Ia on the surface of the antigen-presenting cell (APC). Recent studies have shown that B cells can effectively function as APC. In the present study we have assessed the ability of cloned inducer T cells to discriminate between activated B cells or splenic macrophages as APC. We found that most of the clones tested demonstrated an equivalent response to antigen presented by activated B cells or splenic adherent cells. Some clones were very efficiently stimulated by antigen presented by activated B cells, whereas other clones failed to respond or responded very poorly when activated B cells were used to present antigen. We attempted to determine the mechanism responsible for the inability of certain clones to proliferate in response to antigen presented by activated B cells.
mesh_terms: D000818:Animals; D000938:Antigen-Presenting Cells / Q000145:classification / Q000276:immunology*; D001402:B-Lymphocytes / Q000145:classification / Q000276:immunology*; D002999:Clone Cells / Q000145:classification / Q000276:immunology; D006241:Haptens / Q000276:immunology; D000949:Histocompatibility Antigens Class II / Q000235:genetics / Q000276:immunology; D008213:Lymphocyte Activation; D008264:Macrophages / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D009596:Nitrophenols / Q000276:immunology; D010648:Phenylacetates; D013601:T-Lymphocytes / Q000145:classification / Q000276:immunology*
chemical_list: D006241:Haptens; D000949:Histocompatibility Antigens Class II; D009596:Nitrophenols; D010648:Phenylacetates; C026242:4-hydroxy-5-nitrophenyl acetic acid