ECwt infection of mice increased PPARγ expression by 110.35 ± 10.5%, 46.02 ± 6.78%, 23.00 ± 4.80%, and 29.07 ± 5.39% in villus cells at 12, 24, 36, and 48 h.p.i., respectively, relative to uninfected control mice. The gene discussed is PPARG; the disease is infection.