Conoidasida

Cystoisospora belliAn oocyst of Cystoisospora belli in the epithelial cell of a mammalian host stained with hematoxylin and eosin. The oocyst is marked with yellow arrow.Cystoisosporiasis. Microscopy Findings on the website of the Division of Parasitic Diseases and Malaria (Centers for Disease Control and Prevention)This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services,From Wikimedia Commons