title: Characterization and specificity of a T-cell cooperative factor.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology; D001665:Binding Sites; D003429:Cross Reactions; D007106:Immune Sera; D051379:Mice; D008809:Mice, Inbred C3H; D008970:Molecular Weight; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007106:Immune Sera