[Contribution to the study of the bursa of Fabricius].
D000818:Animals; D002060:Bursa of Fabricius; D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D041981:Gastrointestinal Tract / Q000196:embryology*; D014566:Urogenital System / Q000196:embryology*
EMBRYO; GASTROINTESTINAL SYSTEM/embryology; UROGENITAL SYSTEM/embryology