Antigens, HelminthHelminthsHelminthiasisHelminthiasis, AnimalAntibodiesCarcinoembryonic AntigenAntibodies, MonoclonalTherapy with HelminthsAntigen-Antibody ComplexAntigensHLA AntigensAntibodies, ViralIntestinal Diseases, ParasiticAntigen-Antibody ReactionsAntibody SpecificityImmunoglobulin GIsoantibodiesAntigens, ViralTrichurisAntibodies, HelminthAncylostomatoideaAntigens, BacterialImmunoglobulin Fab FragmentsAntibodies, BacterialImmunoglobulin FragmentsAnthelminticsHepatitis B AntibodiesHelminth ProteinsAntigens, NeoplasmAntigens, SurfaceAntibody FormationHepatitis B Surface AntigensNematospiroides dubiusStrongylida InfectionsEnzyme-Linked Immunosorbent AssayNematode InfectionsCestodaAntibodies, NeutralizingParasite Egg CountAlbendazoleFluorescent Antibody TechniqueEpitopesAntibody Affinity