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FEMS Microbiol Lett. 1992 Jan 1;69(2):141-6.

Analysis of K99 plasmids from enterotoxigenic Escherichia coli.

Author information

1
Department of Veterinary Pathobiology, University of Illinois, Urbana 61802.

Abstract

Evaluation of 9 wild-type K99 positive strains of Escherichia coli showed that each had a plasmid of approximately 87.8 kb that hybridized with two DNA probes specific for K99 genes. The K99 reference plasmid from E. coli also is 87.8 kb. Each of these strains had a conserved 7.15-kb BamHI fragment that also hybridized to these probes. Several K99 negative mutants and three 3P- strains also contained K99 plasmids as well as the 7.15-kb BamHI fragment. These results suggest that there is a conservation in size of the K99 plasmids of diverse strains.

PMID:
1537542
DOI:
10.1016/0378-1097(92)90618-x
[Indexed for MEDLINE]

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