title: Antigen-specific helper activity in serum of mice primed with sheep red cells. I. Definition of the test system and comparison with other systems.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000961:Antilymphocyte Serum / Q000494:pharmacology; D002645:Chickens; D004306:Dose-Response Relationship, Immunologic; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology*; D006462:Hemolytic Plaque Technique; D007116:Immunization, Passive; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D011817:Rabbits; D012756:Sheep; D013601:T-Lymphocytes / Q000276:immunology*; D013934:Thymectomy; D013997:Time Factors
chemical_list: D000961:Antilymphocyte Serum; D000939:Epitopes