The common mouse protozoa Tritrichomonas muris alters mucosal T cell homeostasis and colitis susceptibility

Escalante et al. show that a highly prevalent mouse intestinal protozoa, Tritrichomonas muris, was found to be a confounding factor in murine colitis. Mice infected with this parasite had elevated baseline levels of Th1 cytokines and developed exacerbated Th1-mediated disease.

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