Fig. 3

Histopathology of pancreas. a The pancreatic parenchyma showed typical normal architecture in control group, white arrow indicate normal acinar cell. b The pancreatic section showed significant destruction of structure in SAP group. c After ulinastatin (3000U/kg) treatment, the pancreatic damage was less severe than that in the SAP group. Single black arrows indicate glands damage and acinar cells necrosis, double black arrows indicate tissue oedema, treble black arrows indicate inflammatory cells infiltration. d Pancreas histopathologic score were evaluated according to point Spormann scale, and the results were expressed as means ± SE. n = 10 for each group. ^** P < 0.05 when compared with the control group; ^* P < 0.05 when compared with the SAP group. Magnification, ×200