Mosaic Tetracycline Resistance Genes Are Widespread in Human and Animal Fecal Samples

Abstract
Mosaic tetracycline resistance genes comprising tet (O), tet (W), and tet (32) sequences were abundant in DNA extracted from pig and human fecal samples, accounting for 78% (50/64) and 46% (37/80) of genes amplified with a tet (O) primer set, respectively, in two samples. The nonmosaic tet (32) gene was isolated from a human saliva bacterium.

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