Figure 4: Histological analysis of mouse small intestine after irradiation (recovery phase). Mice received intraluminal infusion of AxCA-Bcl- XL (A), AxCA-lacZ (B) or PBS (C) with Pronase MS® treatment. Twenty-four hours later, mice underwent 10-Gy whole body irradiation and samples were obtained at 10 days after irradiation. (A-C) Hematoxylin/eosin staining. (D) Number of crypts per circumference *p< 0.05. The data of the Pronase MS®-AxCAlacZ group were not shown because two mice died within 7 days after irradiation.