Fig. 3

Immunohistochemical assessment of the surgical specimen. a. Photomicrograph of colon with necrotizing colitis and perforation site. Hematoxylin-phloxine-safranin, × 20. b. Photomicrograph of necrotizing colitis with submucosal pneumatosis intestinalis. Hematoxylin-phloxine-safranin, × 100