[Ontogeny of the bursa of Fabricius-dependent immune system].
D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells; D002060:Bursa of Fabricius / Q000196:embryology* / Q000276:immunology*; D002642:Chick Embryo; D002645:Chickens; D013154:Spleen / Q000166:cytology; D013934:Thymectomy; D013950:Thymus Gland / Q000276:immunology