title: Morphology of bursa of Fabricius in bursectomized and thymectomized ducks.
mesh_terms: D000818:Animals; D002060:Bursa of Fabricius / Q000033:anatomy & histology* / Q000187:drug effects / Q000502:physiology; D004372:Ducks / Q000033:anatomy & histology*; D013739:Testosterone / Q000494:pharmacology; D013934:Thymectomy; D013950:Thymus Gland / Q000502:physiology
chemical_list: D013739:Testosterone