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SUMMARY: The chromosomal location of the genes for host specificity in Salmonella typhimurium has been investigated by F-mediated conjugation using host specificity mutants isolated previously. It was found that the sites of mutations leading to two distinct phenotypes, r− LTm+ LT and r− LTm− LT, are closely linked to each other and are located near the marker proC.
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Colson et al. (1970) studied this question.
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