Sex FactorsSex CharacteristicsSexHistocompatibility Antigens Class IHistocompatibility Antigens Class IISex ChromosomesSex Determination ProcessesUnsafe SexSex WorkersSex DifferentiationSafe SexSex AttractantsSex Determination AnalysisSex DistributionMolecular Sequence DataDisorders of Sex DevelopmentAmino Acid SequenceSex PreselectionSocial ClassImmunoglobulin Class SwitchingSex Hormone-Binding GlobulinBase SequenceSex CounselingAntigen PresentationGonadal Steroid HormonesProstitutionHomosexuality, MaleRisk FactorsHLA-D AntigensSex EducationMalocclusion, Angle Class IIIAge FactorsSexual BehaviorH-2 AntigensMutationHLA-DR AntigensCell LineTime FactorsScavenger Receptors, Class AMice, Inbred C57BLHLA AntigensPhylogenyProtein BindingPeptidesbeta 2-MicroglobulinAllelesPhenotypeHIV InfectionsSequence Homology, Amino AcidRisk-TakingSexual PartnersPrevalenceCross-Sectional StudiesSex Chromosome AberrationsBinding SitesSex OffensesCloning, MolecularSex ChromatinSexually Transmitted DiseasesModels, MolecularSequence AlignmentCohort StudiesAntigens, Differentiation, B-LymphocyteCondomsRNA, MessengerHLA-DQ AntigensT-Lymphocytes, CytotoxicCells, CulturedSpecies SpecificityT-LymphocytesKineticsTestosteroneLymphocyte ActivationSequence Analysis, DNAProspective StudiesB-LymphocytesGene Expression RegulationEvolution, MolecularCase-Control StudiesQuestionnairesRetrospective StudiesReproductionMice, Inbred BALB CUnited StatesLogistic ModelsIntegronsPeptide FragmentsFollow-Up StudiesGenotypeSexual Behavior, AnimalAntigen-Presenting CellsRecombinant ProteinsEscherichia coliStructure-Activity RelationshipTranscription FactorsBiological EvolutionMice, TransgenicGonadsInterferon-gammaPolymerase Chain Reaction