title: Ultrastructure of the intraerythrocytic stage of Cytauxzoon felis.
abstract: The erythrocytes of 2 cats experimentally infected with Cytauxzoon felis were examined by light and electron microscopy. In stained blood smears, parasitized erythrocytes usually contained a single, roundish organism, but occasionally up to 4 were present in a cell. Chains of these roundish organisms also were seen. Elongated parasites, sometimes with ear-like projections, were present in a few erythrocytes. By electron microscopy, the parasite contained a poorly defined nucleus, rough endoplasmic reticulum, ribosomes, nonplicated mitochondria, food vacuoles, and a cytostome on its limiting membrane. Usually, the parasite was oval, but budding forms also were evident. Crystalloid inclusions were present in parasitized and nonparasitized erythrocytes.
authors.forename: C F
authors.initials: CF
authors.lastname: Simpson
authors.forename: J W
authors.initials: JW
authors.lastname: Harvey
authors.forename: J W
authors.initials: JW
authors.lastname: Carlisle
mesh_terms: D000818:Animals; D016782:Apicomplexa / Q000254:growth & development / Q000648:ultrastructure*; D002371:Cat Diseases / Q000469:parasitology*; D002415:Cats; D002417:Cattle; D004912:Erythrocytes / Q000469:parasitology* / Q000648:ultrastructure; D002479:Inclusion Bodies / Q000648:ultrastructure; D008854:Microscopy, Electron; D009940:Organoids / Q000648:ultrastructure; D013801:Theileriasis / Q000469:parasitology