ArthropodsTardigradaNematodaCrustaceaInvertebratesDracunculoideaSpirurida InfectionsPhylogenyGenome, MitochondrialAnnelidaEvolution, MolecularStrongylidaAscaridida InfectionsAscaridoideaOxyuroideaInsectsAir SacsAnguillaSpiruroideaAscarididaOxyuriasisHelminthiasis, AnimalAnisakisNematode InfectionsAngiostrongylus cantonensisMetastrongyloideaMolecular Sequence DataSpecies SpecificityDNA, MitochondrialTylenchidaAnisakiasisPaleopathologyAtelidaeDNA, HelminthRhabditidaGenome, HelminthOesophagostomumMansonelliasisBase SequenceSetariasisSetaria NematodeCestodaMermithoideaMurinaeFish DiseasesEnoplida InfectionsRiversMansonellaAscaridiaTrichostrongyloideaOesophagostomiasisStrongylida InfectionsFilarioideaArgentinaMuscle, StriatedTrichostrongylusHeligmosomatoideaRodent DiseasesFishesGnathostomaLarvaBrazilTrichinella spiralisAntinematodal AgentsParasitesAscaris suumCyprinidaeCaenorhabditisNematospiroides dubiusFresh WaterHost-Parasite InteractionsMicroscopy, Electron, ScanningHelminth ProteinsDNA, Ribosomal SpacerSequence Analysis, DNA