FIG. 4.

Killing of P. aeruginosa cells by peracetic acid. (A) Cells of logarithmic-phase, stationary-phase, and biofilm cultures were treated with peracetic acid for 6 h and then plated for colony counting. The conditions were as described in the legend to Fig. 1. The open squares show that the data points were at or below the limit of detection. Biofilm, diamonds; stationary-phase cells, circles; logarithmic-phase cells, squares. (B) Data of panel A replotted as percent survival.