Centrifugation, Density GradientCentrifugationCentrifugation, ZonalCentrifugation, IsopycnicCell FractionationMetrizamideMicroscopy, ElectronMolecular WeightBone DensityPovidoneUltracentrifugationTriiodobenzoic AcidsSubcellular FractionsElectrophoresis, Polyacrylamide GelCell SeparationCell MembraneKineticsSucroseChromatography, GelTritiumCesiumPopulation DensityHydrogen-Ion ConcentrationLiverDetergentsRabbitsOrganoidsCattleSilicon DioxideSolubilityCell LineFiltrationCells, CulturedElectrophoresisMethodsTime FactorsMacromolecular SubstancesDiatrizoateOctoxynolLysosomesChromatographyTemperatureNucleotidasesDensitometryMembrane ProteinsLipoproteins, LDLMolecular Sequence DataLipoproteins, HDLCytoplasmic GranulesDNALipoproteinsAmino AcidsSpermatozoaPhospholipidsMembranesErythrocytesRats, Inbred StrainsCholesterolBiological TransportMicrosomesChemical PrecipitationEscherichia coliOrganellesIntracellular MembranesCarbon IsotopesChromatography, DEAE-CellulosePolyethylene GlycolsMagnesiumProteinsChemical FractionationPhosphorus IsotopesChloridesCytoplasmCell NucleusCell CountAmino Acid SequenceMembrane MicrodomainsLipoproteins, VLDLAcid PhosphataseChromatography, AffinityCell-Free SystemThymidineCytosolModels, BiologicalProtein BindingAdenosine TriphosphatasesApolipoproteinsRibonucleasesChromatography, Ion ExchangeElectrophoresis, Agar GelFicollCulture TechniquesHypergravityImmune SeraUridineSperm MotilityPolyribosomesCricetinaeErythrocyte AgingImmunodiffusion