“…The severity of the I/R injury in both the jejunum and the ileum was assessed semi-quantitatively according to the microscopic criteria for grading of intestinal tissue injury described by Park [20]; the grading was as follows: normal mucosal villi, 0; subepithelial spaces at the villi tips, 1; wider subepithelial spaces, 2; epithelial lifting along the sides of the villi, 3; denuded villi, 4; loss of villus tissue, 5; crypt layer infarction, 6; transmucosal infarction, 7; and transmural infarction, 8. The lung tissue was graded using a score of 0 to 12 (0 to 4 for intra-alveolar edema, intra-alveolar hemorrhage, and neutrophilic infiltration; absent, 0; mild, 1; moderate, 2; severe, 3; overwhelming, 4) as described by Gloor [21].…”