title: CD4+ T cells: specificity and function.
mesh_terms: D000818:Animals; D000945:Antigens, Differentiation, T-Lymphocyte / Q000276:immunology*; D002460:Cell Line; D000939:Epitopes / Q000276:immunology; D000949:Histocompatibility Antigens Class II / Q000276:immunology; D006801:Humans; D008213:Lymphocyte Activation; D008222:Lymphokines / Q000276:immunology; D051379:Mice; D011948:Receptors, Antigen, T-Cell / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D000939:Epitopes; D000949:Histocompatibility Antigens Class II; D008222:Lymphokines; D011948:Receptors, Antigen, T-Cell