Large egg (>50um) with rough, bumpy shell, single-celled embryo.
01a. Egg (>50um) with rough, bumpy shell; single-celled embryo.
Oocyst (<40um) with rough, striated, or spiny shell; single-celled embryo.
01b. Oocyst (<40um) with rough, striated, or spiny shell; single-celled embryo.
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