[The effect of neuraminidase of C. diphtheriae on the functional capacity of the peritoneal exudate cells of guinea pigs to diphtheria bacilli].

A study was made of the effect of neuraminidase preparation containing no diphtheria toxin admixtures and hyaluronidase on the phagocytic activity of macrophages. Neuraminidase produced a stimulating effect on the cells of the developing macrophage culture. The macrophages treated with the enzyme increased their capacity to digestion of nontoxigenic diphtheria bacilli.