[Change in phagocytic activity toward the agent of tularemia in highly sensitive animals with mixed infections].

An increase of the ingestive and digestive capacity of neutrophils to the homologous causative agent and tularemia microbe was revealed by the opsonophagocytic test in Microtus arvalis, albino mice and guinea pigs infected with sublethal Yersinia pseudotuberculosis and Salmonella typhimurium doses. In subsequent tularemia infection some of the animals displayed a reduction of the septicemia intensity, prolongation of the disease and elevation of the susceptibility threshold. Period of manifestation of the inhibitory action on tularemia coincided with that of the increase in phagocytic activity