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NBME 18 Answers

nbme18/Block 2/Question#32

Investigator studying vancomycin-resistant Enterococcus faecalis

Plasmid loss

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submitted by match95(6),

Transposition of the vanA gene from vancomycin-resistant Enterococcus is how it transfers resistance. They use transposons which are located on plasmids. If you have plasmid loss, you won't have transposons, and resistance will decrease.