An official website of the United States government
Here's how you know
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.
V3 polymorphism. Amino acids with a minimum site-specific frequency of 1% are shown in order of decreasing frequency (top to bottom). Frequencies were calculated from a data set containing one sequence from each of 3297 patients.