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.
Effect of PB2-E712D on the mutation rate. (A) Each virus was passaged five times in MDCK cells, and the mutations introduced into each segment during the passages were counted. (B) The mutation number per nucleotide in each segment was calculated, and the mean values for all eight segments are shown.
