AllelesHLA AntigensGenotypeAntigensPolymorphism, GeneticPolymorphism, Single NucleotideHLA-B27 AntigenGenetic VariationGene FrequencyGenetic Predisposition to DiseaseHLA-B AntigensHLA-B44 AntigenAntigens, BacterialCase-Control StudiesAntigens, NeoplasmHaplotypesAntigens, SurfaceAntigens, ViralHLA-B8 AntigenMolecular Sequence DataAryl Hydrocarbon HydroxylasesHomozygoteHLA-B37 AntigenSpondylitis, AnkylosingPolymerase Chain ReactionPhenotypeReceptor, Melanocortin, Type 1MutationArthritis, ReactiveBase SequenceHeterozygoteAmino Acid SequenceHLA-DR AntigensHLA-A AntigensPolymorphism, Restriction Fragment LengthAntigens, ProtozoanGenetic Association StudiesRisk FactorsHair ColorEuropean Continental Ancestry GroupPharmacogeneticsUveitis, AnteriorAsian Continental Ancestry GroupAntigens, Polyomavirus TransformingEpitopesExonsXeroderma Pigmentosum Group D ProteinHistocompatibility TestingCollectinsReceptors, CorticotropinAntigens, CDHLA-B35 AntigenHLA-C AntigensMannose-Binding LectinSkin PigmentationLinkage DisequilibriumAntigens, FungalSequence Analysis, DNAH-2 AntigensHLA-DQ AntigensSacroiliac JointHLA-B7 AntigenAntigens, HelminthHistocompatibility Antigens Class ISpondylarthropathiesHistocompatibility Antigens Class IIReceptors, MelanocortinCross ReactionsDNA PrimersOdds RatioCytochrome P-450 CYP1A1Antibodies, MonoclonalCarcinoembryonic AntigenArylamine N-AcetyltransferaseAntigens, Viral, TumorHistocompatibility AntigensAfrican Continental Ancestry GroupAwards and PrizesReceptors, Antigen, T-CellHLA-A2 AntigenT-Lymphocytes, CytotoxicDNA RepairSkin Window TechniqueAmino Acid SubstitutionHLA-B51 AntigenPedigreeRiskHLA-D AntigensHIV Long-Term SurvivorsDNA-Binding ProteinsCell LineT-LymphocytesHLA-DRB1 ChainsDNA Mutational AnalysisSmokingCytochrome P-450 CYP2D6Glutathione S-Transferase piProliferating Cell Nuclear AntigenMethylenetetrahydrofolate Reductase (NADPH2)Cohort Studies