Table.

Scoring system of tissue I/R injury in the intestinal mucosa.

Grade 0	Healthy mucosal villi
Grade 1	Mild neutrophil density in lamina propria, formation of subepithelial detachments at the tip of the villi with capillary congestion
Grade 2	Subepithelial detachments exerted a moderate amount of upward push on the mucosa epithelium, moderate leukocyte density
Grade 3	Large subepithelial detachments exerted a massive amount of upward push on the mucosa epithelium along the villi and few denuded villus tips were observed
Grade 4	The villi were denuded to the level of lamina propria and dilated capillaries
Grade 5	Presence of ulceration, disintegration of lamina propria, and hemorrhage.