Archaeal ProteinsRNA, ArchaealDNA, ArchaealGenes, ArchaealAntigensGenome, ArchaealArchaeaArchaeal VirusesAntigens, BacterialAntigens, NeoplasmAntigens, SurfaceGene Expression Regulation, ArchaealAntigens, ViralSulfolobusMethanobacteriaceaeMethanococcalesCrenarchaeotaMolecular Sequence DataChromosomes, ArchaealAntigens, ProtozoanMethanococcusAntigens, Polyomavirus TransformingSulfolobus solfataricusHLA AntigensHaloferax volcaniiPyrococcus furiosusAntigens, FungalRibosome Subunits, Large, ArchaealAntigens, CDAntigens, HelminthH-2 AntigensAmino Acid SequencePhylogenyPyrococcus abyssiCarcinoembryonic AntigenAntigens, Viral, TumorArchaeoglobus fulgidusProliferating Cell Nuclear AntigenMethanosarcinaHLA-DR AntigensReceptors, Antigen, T-CellSulfolobus acidocaldariusHistocompatibility AntigensAntibodies, MonoclonalPyrococcus horikoshiiBase SequenceHistocompatibility Antigens Class IIProstate-Specific AntigenO AntigensReceptors, Antigen, B-CellEpitopesBacteriaAcidianusMethaneAntigens, CD15Antigens, Tumor-Associated, CarbohydrateHLA-A2 AntigenAntigens, CD8T-LymphocytesNanoarchaeotaEuryarchaeotaRNA, Ribosomal, 16SPyrococcusEnzyme-Linked Immunosorbent AssayThermoplasmaSequence AlignmentImmunoglobulin GBlood Group AntigensHepatitis B Surface AntigensAntigens, CD3Cross ReactionsGlyceryl EthersHLA-A AntigensSequence Analysis, DNASequence Homology, Amino AcidModels, MolecularHistocompatibility Antigens Class IThermoproteaceaeMice, Inbred BALB CGeologic SedimentsLymphocyte ActivationHLA-D AntigensAntibody SpecificityMethanobacteriumReceptors, AntigenMethanosarcinalesEvolution, MolecularAntigens, CD45Hepatitis B AntigensMethanobacterialesAntigens, CD4Recombinant ProteinsAntigen-Antibody ReactionsRibosome Subunits, Small, ArchaealAntigens, CD1Fluorescent Antibody TechniqueAntibodies, BacterialImmune SeraAntibody FormationCloning, Molecular