[Enhancement of infection resistance of mice infected with Salmonella typhi by factors of immune lymph nodes].

Mediators, secreted by lymph node cells shortly after immunization and draining the site of the injection of the antigen, produced a nonspecific activating effect on cells of the macrophagal series. The preventive injection of immune lymph node factors induced an increase in nonspecific resistance to S. typhi TU2 [correction of Ty2] No. [correction of N]4446.