Abstract
The slightly increased resistance in the mice infected with murine leprosy bacilli against tuberculous infection was verified by the following results.
It appears that the mice inoculated with murine leprosy bacilli showed partial immunity of lower grade against infection with virulent tubercle bacilli. Because it was shown that the growth of tubercle bacilli in organs was inhibited in the early stage of the infection, though there was no difference between the survival time of treated mice and that of the controls.
When the mice severely infected after intraperitoneal inoculation with murine leprosy bacilli were infected with tubercle bacilli, the latter were slightly more abundant than those of the controls, in culture made from the organs.
