title: A mammalian equivalent of the avian bursa of Fabricius.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D002060:Bursa of Fabricius; D004064:Digestive System; D006968:Hypersensitivity, Delayed; D007122:Immunoelectrophoresis; D066298:In Vitro Techniques; D008208:Lymphatic System / Q000166:cytology* / Q000528:radiation effects*; D008221:Lymphoid Tissue / Q000601:surgery; D011200:Poultry; D011817:Rabbits; D011830:Radiation Effects