title: Experimental maedi infection in sheep. 2. Antibody response.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D003168:Complement Fixation Tests; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000276:immunology*; D012137:Respiratory System / Q000382:microbiology; D012756:Sheep / Q000382:microbiology*
chemical_list: D000914:Antibodies, Viral