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.
Prevalences of ampC, mexB, or mexY overexpression in several subsets of isolates nonsusceptible to different antibiotics. * indicates a P value of <0.05 and ** indicates a P value of <0.001 compared to the corresponding subsets of susceptible isolates.
