title: Gut-associated lymphoid tissues in lambs before and after birth.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001717:Birds; D002060:Bursa of Fabricius / Q000276:immunology; D004064:Digestive System / Q000276:immunology*; D013505:Digestive System Surgical Procedures; D005260:Female; D007413:Intestinal Mucosa / Q000276:immunology; D007422:Intestines / Q000276:immunology; D008198:Lymph Nodes / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D008221:Lymphoid Tissue / Q000276:immunology*; D008643:Mesentery / Q000276:immunology; D010581:Peyer's Patches / Q000276:immunology; D011247:Pregnancy; D013997:Time Factors