Fig. 6.
The NK cell-killing activity of splenocytes from BALB/c mice 4 weeks after the last vaccination. Each group was composed of eight mice
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.