title: Peyer's patches and the early development of B lymphocytes.
mesh_terms: D000818:Animals; D000941:Antigens / Q000276:immunology; D001402:B-Lymphocytes / Q000166:cytology*; D002455:Cell Division; D006410:Hematopoiesis; D010581:Peyer's Patches / Q000166:cytology / Q000502:physiology*; D012756:Sheep / Q000196:embryology / Q000276:immunology
chemical_list: D000941:Antigens