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.
The hif operon of Hib AM30 (43), showing PCR primers used to amplify the region. Open arrows, genes; arrowheads, 57-bp direct repeats flanking the hif operon; double-headed arrow (not to scale), overlapping promoter region between hifA and hifB; closed arrows (not to scale), external primers purE-F and pepN-R, used to amplify the entire purE-pepN region, and primers hifA-F and hifE-R, used to make the hif-specific probe.
