Immune response regulation.
D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D002450:Cell Communication; D002645:Chickens; D006183:H-2 Antigens / Q000235:genetics; D006968:Hypersensitivity, Delayed / Q000276:immunology; D008211:Lymphocyte Cooperation; D008264:Macrophages / Q000276:immunology; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology
D006183:H-2 Antigens