Abstract
THE first biological experiments1 with heavy water (May 1933) showed that a low concentration of diplogen (1 part in 2,000) may have a beneficial effect on forms such as Spirogyra (the average longevity of 355 cells, in filament sections of 10–50 cells, in the diplogen water was 7.6 days, and the average for 322 cells in ordinary water was 1.6 days). It was also reported2 that cell division in Euglena is increased in this dilute heavy water (density 1.00006). Meyer3 confirmed the dilute heavy water effect by demonstrating that mats of Aspergillus showed sixteen times the dry weight of controls.
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References
T. C. Barnes, J. Amer. Chem. Soc., 55, 4332; 1933.
T. C. Barnes, Science, 79, 370; 1934.
S. L. Meyer, Science, 79, 210; 1934.
T. C. Barnes, and E. J. Larson, J. Amer. Chem. Soc., 55, 5059; 1933.
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LARSON, E., BARNES, T. Parasitism in Heavy Water of Low Concentration. Nature 133, 873–874 (1934). https://doi.org/10.1038/133873d0
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DOI: https://doi.org/10.1038/133873d0
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