Sections show wall of cyst lined by intestinal epithelium and presence of muscular layer 切片显示囊壁覆盖有肠上皮，并存在肌层。
2.
The little blue organisms lined up along the brush border of the small intestinal epithelium are cryptosporidia . this infection causes diarrhea in immunocompromised hosts 沿着小肠上皮刷状边缘排列的呈蓝色的病原体是隐孢子虫。隐孢子虫感染使免疫缺陷病人腹泻。
