FIG. 1.

Vancomycin removal assay. Removal of vancomycin from the supernatant by M. smegmatis mc²155 (circles) or Cvr-1 (triangles) was monitored at 282 nm at the indicated time points. At each time point, the A₂₈₂ was converted to micrograms of vancomycin per milliliter remaining in the supernatant. The data are the averages of three experiments performed in duplicate. Error bars are smaller than data points.