Case 19. Cryptosporidiosis (15 y-o M)

　 　 　 　
　 Ileal biopsy from a healthy boy suffering from severe diarrhea, who stayed in a farm in Hokkaido for summer vacation with a close contact with cow 　
　 　 　 　

　

 　 Tiny basophilic pathogens infected within the brush border of the enterocytes (HE, oil immersion)