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.
Protection against mortality due to influenza virus infection in mice administered B. breve YIT4064 orally. Oral immunization and nasal inoculation in each group were performed in the same manner as described in the legend to Fig. 4. After nasal injection of PR8, the mice were observed for survival for 14 to 21 days. , P < 0.05 versus survival rate in group 7 or 9, by Fisher’s exact test.
