Figure Legends:
Figure 1: PAS positive round bodies in the luminal border of glands ,×1000(A), Giemsa staining reveals dark spherical bodies(B), Duodenal villous bunting, multiple blue bead cryptosporidium are attached to surface epithelium(C), Gastric antral mucosa with mild inflammation ,regenerative glandular epithelium and multiple round basophilic bodies in luminal surface(D)