Figure 5. Small intestinal HE and immunohistochemical results after IR in mice. (A) Intestinal HE for each group of mice after irradiation. (B) Ki67 staining results of intestinal tissue. (C, D) Statistical plots of height of villi and number of intestinal crypts reflecting the results of Figure (A). (E) Integrated optical density about Ki67 staining results of intestinal tissue from Figure (B). Three typical sections for each group, comparisons between 100× and 200×, 4 fields of view per section. Statistical plots with * as p < 0.05, ** as P < 0.01, *** as p < 0.001 and **** as p < 0.0001, indicating statistically significant differences between groups.