Phosphorus compounds in the cell. 4. The incorporation of radioactive phosphorus into liver cell fractions

Abstract

In part 3 of this series (Davidson & Smellie, 1952b) a method was described for the accurate determination of the specific activities of the individual ribonucleotides of the ribonucleic acid (RNA) of the tissues of animals which had received radioactive phosphorus. This method has now been applied to ,he RNA of cell nuclei and of the various morphoogical fractions of the cell cytoplasm. Preliminary aotes on this work have already been published (Davidson, McIndoe, & Smellie, 1951; Smellie & McIlndoe, 1952) and a full account is given here.