包囊内含大量孢子虫的子孢子，子孢子呈圆形或椭圆形，大小约4~5μm。根据形态学以及寄生特点确定该寄生虫是一种匹里虫。
The spores that filled the cyst were round or elliptic and 4 ~ 5 μ m in size .
包囊孢子