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。

youdao

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。

youdao