title: Evidence for the presence of precursor B cells in normal and in hormonally bursectomized chick embryos.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D001853:Bone Marrow / Q000196:embryology; D016026:Bone Marrow Transplantation; D002060:Bursa of Fabricius / Q000187:drug effects / Q000196:embryology / Q000276:immunology*; D002454:Cell Differentiation; D002642:Chick Embryo; D006410:Hematopoiesis; D013601:T-Lymphocytes / Q000276:immunology; D013739:Testosterone / Q000494:pharmacology
chemical_list: D013739:Testosterone