With routine HE staining, focal inflammation occurred in the mucous membrane of DMC colon and that the neuronal vacuolus of the intermuscular nerve plexus degenerated, reduced and even disappeared.

• 常规HE染色下，DMC结肠粘膜下有灶状炎症，肌间神经丛神经元空泡变性、减少，甚至消失。