The uninfected Gng13-cKO and Trpm5-KO mice displayed significantly more activated caspase 3, 8 or 9-positive cells than uninfected WT mice whereas the infection did not significantly alter the number of activated caspases 3, 8 or 9-positive cells in either the Gng13-cKO or Trpm5-KO proximal colon. Here, CASP3 is linked to infection.