title: The prevalence of Q-fever antibodies in dairy cows in El Salvador.
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis*; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000276:immunology; D004544:El Salvador; D005260:Female; D011778:Q Fever / Q000453:epidemiology / Q000276:immunology / Q000662:veterinary*
chemical_list: D000907:Antibodies, Bacterial