AntibodiesAntibodies, ViralAutoantibodiesHIV SeropositivityAntibodies, BacterialAntibody SpecificityEnzyme-Linked Immunosorbent AssayHepatitis C AntibodiesAntibodies, AntinuclearImmunoglobulin GSeroepidemiologic StudiesHepatitis CAntibodies, MonoclonalHIV AntibodiesImmunoglobulin MHepatitis BHIV InfectionsAntibody FormationCeliac DiseaseAntibodies, NeutralizingPrevalenceHepacivirusBlood DonorsSensitivity and SpecificityAntibody AffinityFluorescent Antibody TechniqueRetrospective StudiesProspective StudiesAntibodies, Anti-IdiotypicBinding Sites, AntibodyRisk FactorsEpitopesJapanHLA-B27 AntigenAntibodies, NeoplasmAntibodies, ProtozoanPregnancyCross ReactionsMolecular Sequence DataAntibodies, FungalNeutralization TestsImmunohistochemistryAmino Acid SequenceAntibodies, Monoclonal, HumanizedAntigen-Antibody ReactionsAntibodies, BispecificImmunoenzyme TechniquesFluorescent Antibody Technique, IndirectImmunoglobulin ASingle-Chain AntibodiesMice, Inbred BALB CAntibodies, BlockingPrognosisHelicobacter pyloriHelicobacter InfectionsAntibodies, Antineutrophil CytoplasmicAIDS-Related Opportunistic InfectionsPolymerase Chain ReactionAntigen-Antibody ComplexImmunoglobulin Fab FragmentsAntibodies, HeterophileAntibodies, CatalyticHepatitis B Surface AntigensAntigens, BacterialReceptor, erbB-2Treatment OutcomeHistidine-tRNA LigaseRabbitsHepatitis B AntibodiesTime FactorsCD4 Lymphocyte CountAutoantigensHIV-1HybridomasImmune SeraRecombinant ProteinsEpitope MappingBreast NeoplasmsGastritisAcquired Immunodeficiency SyndromeAntibodies, AntiphospholipidAntigens, NeoplasmImmunizationBase SequenceSpondylitis, AnkylosingAntigensT-LymphocytesBiological MarkersUveitis, AnteriorCell LineHLA-DR4 AntigenTumor Markers, BiologicalHIV SeronegativityHepatitis B virusHepatitis B e AntigensHLA AntigensHLA-DR AntigensAntigens, SurfaceFollow-Up StudiesCase-Control Studies