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.
Expression of efflux pump AcrAB-OprM genes acrA, acrB, and oprM mRNA in M. catarrhalis strains O35E, 300, and 415 during clarithromycin treatment. Quantitative real-time PCR was performed after 4 h of incubation with and without 0.01 μg/ml clarithromycin. Upregulation was normalized to 16S rRNA. The graph shows one of three representative experiments done in triplicate. Data are presented as means ± 1 SD.
