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.
Comparative colonization profiles of Bordetella bronchiseptica RB50 and RB50Δteps. Number of colony-forming units (CFU) recovered on days 3,7, 14, and 28 from the nasal cavities, trachea, and lungs of C57Bl/6 mice infected with either wild-type (black circle) or mutant (blue square). Dashed gray lines indicate the limit of detection. Asterisk indicates significant differences (*P ≤ .05).
