Wild-type PA14 was grown in MOPS-glucose media to mid-log phase (A600= 0.4–0.5) and shifted to either (A) PBS buffer or (B) MOPS media in the absence or presence of glucose. The indicated concentrations of HOCl, HOBr, or HOSCN were added. After 30 min incubation, excess HOX was quenched by the addition of 10 mM thiosulfate, and the cells were serially diluted with 0.85% NaCl, spot-titered onto LB agar plates, and incubated o/n at 37°C. The experiments were repeated at least three independent times. Data shown in (A) represent means ± s.e.m. A representative data set is shown in (B).