title: Activation of non competent embryonic chicken spleen and bone marrow cells by thymus and bursa Fabricii extracts.
mesh_terms: D000818:Animals; D000941:Antigens; D001853:Bone Marrow / Q000196:embryology / Q000276:immunology*; D001854:Bone Marrow Cells; D002060:Bursa of Fabricius; D002642:Chick Embryo; D002645:Chickens / Q000276:immunology
chemical_list: D000941:Antigens