title: Avian thymus glands: a review.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology; D001717:Birds; D002060:Bursa of Fabricius / Q000276:immunology; D002469:Cell Separation; D002642:Chick Embryo; D002645:Chickens; D005260:Female; D008214:Lymphocytes / Q000145:classification; D008297:Male; D012621:Seasons; D013601:T-Lymphocytes / Q000276:immunology; D013950:Thymus Gland / Q000166:cytology / Q000254:growth & development / Q000276:immunology