The inflammation of ulcerative colitis is confined primarily to the mucosa. Here, the mucosa is eroded by an ulcer that undermines surrounding mucosa.
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美
释义
显微镜下所示,溃疡性结肠炎期初被限制在黏膜层,图示,溃疡侵蚀黏膜层及其周围的黏膜。
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