Fig. 3. The unembryonated large-sized eggs with an operculum (Group II). A. Echinostomatid egg in CTS specimen; B. Isthmiophora hortensis; C. Echinostoma cinetorchis; D. Echinochasmus japonicus; E. Paragonimus westermani; F. Neodiplostomum seoulense; G. Fasciola hepatica; H. Dibothriocephalus nihonkaiensis. Scale bar = 50 ㎛. CTS, cellophane thick smear.