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Genetic maps of Tn1546 types of E. faecium isolates in this study. (A) Typical Tn1546. (B) Tn1546-like element with IS1485 inserted between vanXY. VRE isolates in this study included E. faecium ZP2298 and ZP2171, FB2298, FB2171, FBV2298, FBV2171, FBG2298, and FBG2171. The open reading frames are shown by boxes with arrows, with the arrow indicating the direction of transcription. The arrow on the gray box indicates the transcriptional orientation of the inserted IS1485 element.
