The effect of butyrate on the apoptosis of epithelial cells in the colons. Control: Control group, SAP: SAP group, SAP + butyrate: SAP + butyrate group. (A) The TUNEL detection of apoptotic cells in the colons. Green particles (arrow) represented the positive change. (B) Quantification of the apoptotic cells in each group. Control group versus SAP group: P < .001, Control group versus SAP + butyrate group: P > .05, SAP group versus SAP + butyrate group: P < .01. n = 8 in each group. SAP, severe acute pancreatitis.