Abstract
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 tissues exhibit a different absorption similar to that of the proteins.
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CASPERSSON, T., SCHULTZ, J. Pentose Nucleotides in the Cytoplasm of Growing Tissues. Nature 143, 602–603 (1939). https://doi.org/10.1038/143602c0
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DOI: https://doi.org/10.1038/143602c0
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