Abstract
Biochemical and phenotypic assays indicate that three enterobacterial R plasmids isolated in a single hospital encode 2''-O-adenylyltransferase [ANT(2'')], and an ANT(2'')-specific probe was developed from one plasmid. Southern hybridization revealed the three plasmids to be unrelated and, further, showed their ANT(2'')-encoding genes to be different.
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