title: Causes of microbiological contamination in commercial breeding units.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory / Q000382:microbiology / Q000469:parasitology; D001947:Breeding; D002415:Cats; D003140:Communicable Disease Control; D003141:Communicable Diseases / Q000662:veterinary*; D004199:Disease Vectors; D006168:Guinea Pigs; D051379:Mice; D011817:Rabbits; D051381:Rats