Incidence of certain microorganisms in nasal cavities of swine in Iowa.
D000818:Animals; D001419:Bacteria; D007239:Infections / Q000662:veterinary; D007484:Iowa; D009666:Nose / Q000382:microbiology*; D012222:Rhinitis, Atrophic / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000382:microbiology