Cell fractionation, a technique that arose from the early studies of Claude (1946 a, b), Hogeboom et al. (1948), and Schneider (1948), has become one of the most potent tools of biochemical research. The recognition of mitochondria as powerhouses of the cell is inconceivable without this technical approach. The sharp outlining of mitochondria and mitochondrial fractions against lysosomes and peroxisomes during the next decade (de Duve and his school, see section I.A.) became possible by refinement of these methods, especially the development of density gradient centrifugation.
KeywordsAcid Oxidase Sedimentation Coefficient Peroxidatic Activity Peroxisomal Membrane Phenazine Methosulfate
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