title: Cyclization of T-cell helper activity.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000961:Antilymphocyte Serum / Q000494:pharmacology; D004306:Dose-Response Relationship, Immunologic; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D007700:Kinetics; D051379:Mice; D008806:Mice, Inbred AKR; D008808:Mice, Inbred CBA; D012756:Sheep; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000145:classification / Q000276:immunology*; D014965:X-Rays
chemical_list: D000961:Antilymphocyte Serum