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1·Pathological findings included crypt epithelial cell apoptosis and dropout, crypt destruction and variable lymphocytic infiltration of epithelium and lamina propria.

病理学表现提示：隐窝上皮细胞凋亡、缺失，隐窝结构破坏，上皮和黏膜固有层不同程度的淋巴细胞浸润。

2·The lamina propria CD4+ T cells and the mast cells in jejunum were also increased(P > 0.05 and P< 0.01, respectively) at 3 weeks after oral immunization compared with control group.

首次免疫后第3周空肠中肥大细胞数量与对照组相比有极显著性增加（P<0.01）。

3·This suggests that the endocrine cells were located in the epithelium of the villi and the crypts of lieberkuhn and in the lamina propria of the small intestine in the low forms of vertebrate.

故可认为低等脊椎动物扬子鳄不仅在小肠腺和小肠上皮内，而且在固有层内均含有内分泌细胞。