title: The incidence of R factors in Bordetella bronchiseptica isolated from pigs.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology; D000818:Animals; D001884:Bordetella / Q000187:drug effects*; D005111:Extrachromosomal Inheritance; D009666:Nose / Q000382:microbiology*; D010403:Penicillin Resistance; D013307:Streptomycin / Q000494:pharmacology; D013412:Sulfadimethoxine / Q000494:pharmacology; D013552:Swine
chemical_list: D013412:Sulfadimethoxine; D000667:Ampicillin; D013307:Streptomycin