Fig. 9: Experimental design.

Seventy mice were divided into seven groups, with ten mice in each group, and were assigned to five different diets starting 2 weeks before irradiation and continuing until 6 weeks after irradiation (A). Body weights and fecal samples were collected weekly. The compositions of the diets are shown in (B). The diets contained either 15% total fiber, with counterbalanced proportions of bioprocessed oat bran fiber and/or microcrystalline cellulose fiber, or 0% fiber. The detailed composition of the diets is provided in Table 1 and Supplementary Table 2.