The bursa: Fabricius to Delaware.
D000818:Animals; D002060:Bursa of Fabricius / Q000033:anatomy & histology / Q000276:immunology / Q000502:physiology*; D002645:Chickens / Q000033:anatomy & histology / Q000276:immunology / Q000502:physiology; D004702:Endocrine Glands / Q000502:physiology; D007243:Infectious bursal disease virus; D011201:Poultry Diseases / Q000276:immunology / Q000517:prevention & control; D012088:Reoviridae Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary*; D014611:Vaccination