title: Immunocompetent cells in the blood of immunized chickens.
mesh_terms: D000367:Age Factors; D000818:Animals; D000917:Antibody Formation; D000941:Antigens / Q000008:administration & dosage*; D001853:Bone Marrow / Q000276:immunology; D002060:Bursa of Fabricius / Q000276:immunology; D002645:Chickens / Q000276:immunology*
chemical_list: D000941:Antigens