References in periodicals archive ?
Isospora belli is a protozoan parasite of the phylum Apicomplexa, class Sporozoa, subclass Coccidian and family Eimeriidae.
It belongs to the subphylum Apicomplexa, class Sporozoa, and exists in nature in 3 forms: the oocyst (which releases sporozoites), the tissue cyst (which contains and may release bradyzoites), and the tachyzoite.