title: T-cell colonies recognize antigen in association with specific epitopes on Ia molecules.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D000939:Epitopes; D006168:Guinea Pigs; D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D008264:Macrophages / Q000276:immunology*; D008285:Major Histocompatibility Complex; D011948:Receptors, Antigen, T-Cell / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D000949:Histocompatibility Antigens Class II; D011948:Receptors, Antigen, T-Cell