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.
Amplicons from the variable region of Class 1 integrons. Lanes 1 and 4, strain 6479 grown in the presence of 32 and 256 μg/mL streptomycin, respectively. Lanes 2 and 3, strain 3430-1 grown in the presence of 32 and 256 μg/mL streptomycin, respectively. Lane 5, λ/HindIII fragments (Fermentas, Vilnius, Lithuania). Diagrams on the left show the integron arrangements documented.
