Figure 1.
Phylogenetic tree of the protein sequences of five strains each of the six HPV types 11, 16, 18, 33, 35, and 45. Neighbor-joining method used, software MEGA5.22.
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.