Figure 1.
Bactericidal activity of different serum samples toward a panel of clinical ST258 isolates. 3–5 × 103 CFU of the indicated ST258 isolates were incubated at 37 °C in 75 % serum samples of different origin as indicated on the individual panels. Aliquots were plated after incubation for 1 h and 2 h respectively and the recovered CFUs were correlated with the inoculum. The detection limit was 0.1% of inoculum. NHS: normal human serum.