title: The immunity of lambs to coccidia acquired in the field and by artificial infection.
mesh_terms: D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D001623:Betamethasone / Q000494:pharmacology; D001835:Body Weight; D003048:Coccidiosis / Q000276:immunology*; D004539:Eimeria; D007109:Immunity / Q000187:drug effects; D007165:Immunosuppression Therapy; D010270:Parasite Egg Count; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology*
chemical_list: D001623:Betamethasone