Oocysts

**Definition:** Zygote-containing cysts of sporozoan protozoa. Further development in an oocyst produces small individual infective organisms called SPOROZOITES. Then, depending on the genus, the entire oocyst is called a sporocyst or the oocyst contains multiple sporocysts encapsulating the sporozoites.

**Tree numbers:** - A11.870.740.600 - B05.500.675 - B05.775.740.600 - G07.345.500.550.500.675