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.
Groups of 15 susceptible BALB/c mice were infected intranasally with 100 pfu each of the indicated viruses and scored daily for signs of illness and weight loss. Survival rates are shown on the bottom panel.
