Representative HE sections of small intestine from mice receiving radiation alone (left panels), or radiation plus PHY906 (right panels) 2 weeks earlier. At this time, there was still mild to marked villus blunting and villus loss in irradiated mice, which was variable in different sections. Crypt numbers also remained lower than normal. In mice treated with PHY906 along with radiation, there was preservation of villus length and distribution, as well as preservation of crypt numbers. Scale Bars = 200 microns.