Centrifugation, IsopycnicMetrizamideCentrifugation, Density GradientCell FractionationCentrifugation, ZonalCentrifugationCesiumAcid PhosphataseMicroscopy, ElectronSubcellular FractionsTritiumLysosomesNucleotidasesHydrolasesMolecular WeightCell MembraneThymidineCarbon IsotopesLiverElectrophoresis, Polyacrylamide GelDNACell LinePovidone