Pathogenic Mechanisms, Ecology, and Epidemiology

Growth Advantage of Fast Lactose-Fermenting Mutants of Slow Lactose-Fermenting Coliform Bacteria in Gnotobiotic Rats and Mice

Tracy D. Wilkins, Jacqueline A. Franzese
DOI: 

ABSTRACT

When germ-free rats or mice were mono-associated with either Escherichia coli lac− (ATCC 15939) or a slow lactose-fermenting coliform (Paracolobactrum coliforme ATCC 11605), fast lactose-fermenting mutants overgrew the parent organisms.

FOOTNOTES

  • ↵1 Present address: The Anaerobe Laboratory, Virginia Polytechnic Institute, Blacksburg, Va. 24061.

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