Centrifugation, IsopycnicCentrifugation, Density GradientCentrifugationCentrifugation, ZonalCell FractionationMolecular WeightMicroscopy, ElectronPovidoneMetrizamideSubcellular FractionsElectrophoresis, Polyacrylamide GelTritiumCesiumCell MembraneCell SeparationSucroseUltracentrifugationOrganoidsKineticsChromatography, GelLysosomesPhosphotungstic AcidNucleotidasesMethodsLiverAcid PhosphataseDiatrizoateRabbitsCattleDetergentsCytoplasmic GranulesHydrogen-Ion ConcentrationCell LineMembranesMicrobodiesSolubilityThymidineDigitoninSilicon DioxideCarbon IsotopesMacromolecular SubstancesEscherichia coliDNAUridineMicrosomesIntracellular MembranesAmino AcidsNucleoproteinsChromatographyCells, CulturedTemperature