Objective To observe the tegumental ultrastructure of egg,cercariae and the adults of Echinostoma Miyagawai may provide information for its taxonomic studies and its biological characteristic.

• 目的观察宫川棘口吸虫虫卵、尾蚴及成虫的体被超微结构，为其分类及其生物学特性的进一步认识提供资料。