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.
Above each column pair is the p-value corresponding to the comparison. The time point of infection is marked with an arrow. Error bars represent the standard error for each time point.
