Uptake of environmental antigens by the bursa of Fabricius.
D001003:Anal Canal / Q000502:physiology; D000818:Animals; D000907:Antibodies, Bacterial; D000917:Antibody Formation; D000941:Antigens; D000942:Antigens, Bacterial; D001466:Barium Sulfate; D002003:Brucella abortus / Q000276:immunology; D002060:Bursa of Fabricius / Q000276:immunology*; D002244:Carbon; D002645:Chickens; D002988:Cloaca / Q000502:physiology; D004912:Erythrocytes / Q000276:immunology; D012756:Sheep / Q000276:immunology
D000907:Antibodies, Bacterial; D000941:Antigens; D000942:Antigens, Bacterial; D001466:Barium Sulfate; D002244:Carbon