Chromatography, High Pressure LiquidChromatography, LiquidChromatography, Reverse-PhaseChromatographyTandem Mass SpectrometryChromatography, GasSpectrometry, Mass, Electrospray IonizationLimit of DetectionChromatography, Thin LayerMass SpectrometrySolid Phase ExtractionChromatography, Ion ExchangeReproducibility of ResultsChromatography, AffinityDrug StabilityChromatography, GelGas Chromatography-Mass SpectrometryAcetonitrilesSpectrophotometry, UltravioletCalibrationReference StandardsLiquid-Liquid ExtractionSensitivity and SpecificityIsomerismTabletsStereoisomerismIndicators and Reagents3,4-MethylenedioxyamphetamineChromatography, PaperPlant BarkMolecular WeightDrug ContaminationDosage FormsMethodsElectrophoresis, Polyacrylamide GelPlant ExtractsMolecular StructureSolventsSilicon DioxideHydrogen-Ion ConcentrationSubstance Abuse DetectionLeast-Squares AnalysisMolecular Sequence DataCattleLinear ModelsPeptidesAmino Acid SequenceDrugs, Chinese HerbalBuffersKineticsElectrochemistryProteomicsMagnetic Resonance SpectroscopyTemperaturePolymersProteinsCarbon IsotopesSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationSpectrometry, FluorescenceLiverChromatography, DEAE-CelluloseEscherichia coliRabbitsChromatography, AgaroseAnxiety, SeparationCountercurrent DistributionImmunomagnetic SeparationCell SeparationAmino AcidsElectrophoresis, CapillaryChromatography, Micellar Electrokinetic CapillaryChemical FractionationSepharoseSubstrate SpecificityIsoelectric FocusingChemistryChemical PhenomenaMaternal DeprivationElectrophoresis, MicrochipCarbohydratesElectrophoresisCentrifugation, Density GradientPeptide FragmentsTrypsinProtein BindingMicrochemistryIsoelectric PointHydrolysisCarbohydrate SequenceSolubilityMacromolecular SubstancesOligosaccharidesBase SequenceTime FactorsRecombinant ProteinsChemistry Techniques, AnalyticalRadioimmunoassayImmunodiffusionBinding SitesHydroxyapatites