Pentose Nucleotides in the Cytoplasm of Growing Tissues

@article{Caspersson1939PentoseNI,
  title={Pentose Nucleotides in the Cytoplasm of Growing Tissues},
  author={Torbj{\"o}rn Caspersson and Jack C. Schultz},
  journal={Nature},
  year={1939},
  volume={143},
  pages={602-603}
}
INTEREST in the nucleic acid metabolism of mitosis has in general tended to centre on the nucleus. More recently evidence has been obtained showing an interplay between the nucleic acid metabolism of the nucleus and that of the cytoplasm1. Studying the ultra-violet absorption spectra of the cytoplasms of growing tissues, we have found them all to exhibit the maximum around 2600 A., characteristic of the cyclic nitrogenous bases present in the nucleic acids. In contrast, the homologous mature… 
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Evidence is given of a relation between nucleic acid metabolism and gene reproduction of Drosophila melanogaster races due to an abnormality of gene reproduction, consequent upon chromosome rearrangements involving the ‘heterochromatic’ regions.