Cytauxzoon
proposed the name Cytauxzoon to accommodate the Theileria like parasites with preerythrocytic schizogony in histiocytes.This genus was originally described in African ruminants but is now known to be common in felids including the domestic cat (Felis catus).This genus is closely related to Theileria but differs from it by replicating in macrophages rather than lymphocytes.As these leukocytes become engorged with schizonts, they line the lumens of veins and may causing obstruction of blood flow.The schizonts develop into merozoites which eventually cause host cell rupture and enter the blood.