title: Survival rate of lambs after an injection of ewe's serum.
mesh_terms: D000818:Animals; D000831:Animals, Newborn / Q000276:immunology*; D005260:Female; D007116:Immunization, Passive / Q000662:veterinary*; D008146:Louping Ill / Q000276:immunology / Q000401:mortality*; D012756:Sheep / Q000276:immunology