Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Virulence of strains expressing wild-type or mutated ExoS in a mouse model of acute pneumonia. Lines represent the number of animals surviving in each experimental group over time (n = 10 per strain, pooled from two separate experiments). §, Significant difference from PA99null+S (P < 0.0001).
