Effect of E. ulmoides extract on intestinal morphology. (A–D) Representative photomicrographs (5x) of villus in the duodenum, jejunum, and ileum of the 4 tested groups. (E) Villus height, crypt depth, and villus height to crypt depth ratio of duodenum, jejunum, and ileum in the 4 tested groups. Different small letters indicated significant differences at P < 0.05 level of Tukey test under different treatments.