Skin TestsDermatitis, AtopicDermatitis, Allergic ContactSkinHypersensitivityDinitrofluorobenzeneDermatitisTuberculin TestImmunoglobulin EPatch TestsOvalbuminIntradermal TestsLatent TuberculosisInterleukin-4Th2 CellsSkin AgingSkin DiseasesMice, Inbred BALB CSkin NeoplasmsTuberculosisDisease Models, AnimalHypersensitivity, DelayedInterferon-gamma Release TestsMice, KnockoutHypersensitivity, ImmediateTuberculinBCG VaccineStreptodornase and StreptokinaseDrug HypersensitivitySkin Physiological PhenomenaMycobacterium tuberculosisTuberculosis, PulmonarySkin AbsorptionRadioallergosorbent TestHistoplasminAllergensUrticariaSkin PigmentationImmunologic TestsTuberculosis, BovineBasophil Degranulation TestAntigens, BacterialAnaphylaxisErythemaContact TracingSensitivity and SpecificityInterferon-gammaSkin, ArtificialMycobacterium bovisMitesImmunity, CellularFood HypersensitivityAntigens, FungalTrichophytinGuinea PigsCoccidioidinSkin Test End-Point TitrationLeishmaniasis, CutaneousLeishmania braziliensisRespiratory HypersensitivityPetasitesReagent Kits, DiagnosticTransfer FactorEnzyme-Linked Immunosorbent AssaySkin Diseases, BacterialSkin UlcerIsoniazidMass Chest X-RayAntitubercular AgentsDesensitization, ImmunologicAsthmaTrichophytonEpidermisLeishmaniasis, MucocutaneousDinitrochlorobenzeneRhinitisCell Migration InhibitionAntigensAsymptomatic InfectionsCoccidioidomycosisInfectious Disease Transmission, Patient-to-ProfessionalLeprominGambiaPrevalenceRhinitis, Allergic, SeasonalAspergillosis, Allergic BronchopulmonaryRhinitis, Allergic, PerennialLatex HypersensitivityBasophilsVeterinary MedicineSilicotuberculosisDrug EruptionsSkin AbnormalitiesPollenEthiopiaLymphocyte ActivationFalse Positive ReactionsLeprosyT-LymphocytesBronchial Provocation Tests