TrematodaPlatyhelminthsTurbellariaTrematode InfectionsEchinostomiasisHeterophyidaePlanariansCestodaEchinostomaDNA, HelminthCestode InfectionsSchistosomatidaeCercariaInvertebratesHelminthsPhylogenyRNA, Ribosomal, 18SRNA, HelminthGenome, HelminthFasciola hepaticaFasciolaSnailsLymnaeaHost-Parasite InteractionsOpisthorchisEvolution, MolecularDNA, RibosomalMolecular Sequence DataKoreaSequence AlignmentFish DiseasesBase SequenceAmino Acid SequenceRNA, Ribosomal, 16SBacteroidetes