title: Failure to demonstrate allotype-specific helper cells for antibody production in the rat.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology*; D002352:Carrier Proteins / Q000276:immunology; D004136:Dinitrobenzenes / Q000276:immunology; D006241:Haptens; D007126:Immunoglobulin Allotypes; D007156:Immunologic Memory; D051381:Rats; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D002352:Carrier Proteins; D004136:Dinitrobenzenes; D006241:Haptens; D007126:Immunoglobulin Allotypes