IceT expression protects S. Typhimurium against the antibiotics ampicillin and ciprofloxacin. (A) EF356 expressing IceT (red) is less susceptible to ampicillin than EF355 containing empty vector (blue) at 30 min P = 0.0065, 60 min P = 0.0039, 90 min P = 0.0046, and 120 min P = 0.014. (B) EF35 expressing IceT (gold) is less susceptible to ciprofloxacin than EF39 containing empty vector (blue) at 30 min P = 0.0086, 60 min P = 0.0028, and 90 min P = 0.0055. Data are the mean of three replicates ±1 SD and significance (*) was determined by two-tailed t test.