Abstract
IN 1941 caspersson, Landström-Hyden and Aquilonius1 demonstrated that the chromidial substance contained in the pancreatic exocrine cells and in other serous secreting elements had a typical absorption spectrum in the ultra-violet region with a peak in 2600 A. As this substance showed a negative Feulgen reaction, they concluded that it is a nucleoprotein with a high content of nucleotides of ribonucleic type. In the apical part of the cell containing the granules, they found absorption curves of a protein type, but with a concentration much lower than in the basal zone ; they explain this difference as due to the dilution of the secretion.
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References
Caspersson, T., Landström, H., and Aquilonius, L., Chromosome, 2, 111 (1941).
Gersh, I., and Baker, R. F., J. Cell. Comp. Phys., 21, 213 (1943).
De Robertis, E., Nuñez, I., and Del Conte, E., Rev. Soc. Arg. Biol., in the press.
Kunitz, M., J. Gen. Phys., 24, 15 (1940).
Bensley, S. H., Anat. Rec, 72, 131 (1938).
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DE ROBERTIS, E. Absorption Spectra of the Exocrine Cells of the Pancreas. Nature 157, 264–265 (1946). https://doi.org/10.1038/157264b0
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DOI: https://doi.org/10.1038/157264b0
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