Fig. 3

Histopathologic examination of ileum and colon of tree shrew infected with C. difficile. A. Normal ileum (100×); B. Normal ileum (200×); C. Normal colon (100×); D. Normal colon (200×); E. infected ileum (100×); F. infected ileum (200×); G. infected colon (100×); H. infected colon (200×)