Association of increased recipient ability for R factors and reduced virulence among variants of Salmonella choleraesuis var. kunzendorf.
D003227:Conjugation, Genetic; D004352:Drug Resistance, Microbial; D005111:Extrachromosomal Inheritance; D005827:Genetics, Microbial; D009154:Mutation; D012475:Salmonella / Q000472:pathogenicity; D014774:Virulence