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Infect Immun. 1971 December; 4(6): 780-782
Copyright © 1971 American Society for Microbiology. All Rights Reserved.
a Department of Pharmacology, University of Kentucky Medical Center, Lexington, Kentucky 40506
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.
1 Present address: The Anaerobe Laboratory, Virginia Polytechnic Institute, Blacksburg, Va. 24061.
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