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.
Logistic regression analysis of death and throat colonization at 72 h after intranasal inoculation with the 5005 wild-type strain (open circles) or with the 5005 sic mutant (solid circles). Each data point represents 10 mice. The y axis represents estimated percent culture-positive animals. The data fit the model (P = 0.021); the group difference was significant (P < 0.019); the dose-dependent parameter was not significant.
