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Microscopic images of different types of cercariae that shed by biomphalarid snails: (a) Amphistome cercariae; (b) BAD cercariae; (c) Echinostome cercariae; (d) Gymnocephalous cercariae; (e) Metacercariae; (f) Ornatae xiphidiocercariae. All cercariae identified to the genus level were 2 mm in size.
