transversotrema patiallensis parasite under the microscopic in laboratory.

adults anatomy background biological biology care cell cercaria cercariae cerithioidea dead egg environment fishes flat food freshwater health human infected intestine laboratory laboratoryn larva larval macro meat medical medicine microscope microscopic movement new parasite parasitic patiallensis patterns raw science scientific snail species specimens stages study sucker thailand thiaridae transversotrema trematoda under view white worms zoological