title: Thymic development of the chick embryo as influenced by hormonal and early surgical bursectomy.
mesh_terms: D000818:Animals; D002060:Bursa of Fabricius / Q000601:surgery*; D002452:Cell Count; D002642:Chick Embryo; D013601:T-Lymphocytes; D013739:Testosterone / Q000008:administration & dosage*; D013950:Thymus Gland / Q000166:cytology / Q000196:embryology*; D013997:Time Factors
chemical_list: D013739:Testosterone