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.
Multiplication of M. tuberculosis Erdman and BCG in spleens (Upper) and lungs (Lower) of the backcross 3 (BC3H) mice segregating at the sst1 locus. The animals were infected with equal doses (2 × 104 cfu) of either virulent or vaccine strain of mycobacteria, and five to seven mice were killed per group at each time point.
