Trichomonas Muris, Parasitic in the Oxyurid Nematodes, Aspicularis tetraptera and Syphacia obvelata, from White Mice

Abstract

Trichomonas muris infections were encountered in the oxyurid nematodes Aspicularis tetraptera and Syphacia obvelata parasitic in laboratory white mice. More rarely infections with other protozoa were encountered in the helminths. The distribution of both protozoan and helminth infections was studied, and the incidence of infected helminths determined. Dividing forms of Trichomonas muris occurred in the intestine of the worm as well as free in the lumen of the intestine of the mouse. An interpretation of certain findings in dividing forms is offered.