Abstract
PREVIOUS work of ourselves1 and others2 has shown that ultra-violet radiation appears at times to stimulate cell division in micro-organisms, but that there is little consistency in obtaining the effect. To establish whether or not stimulation of metabolic processes occurs when cells are subjected to lethal ultra-violet irradiation, the respiration of yeast suspensions irradiated with full ultra-violet under various conditions was compared with that of controls. Again inconsistent results were obtained, but definite stimulation occurred in a number of cases. There then followed an investigation of various factors, such as pH, age of organisms, quality and quantity of radiation, etc., which might have accounted for the inconsistencies.
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References
Sperti and Schneider, Bull. Bas. Sci. Res., 32 (1926). Loofbourow and Cameron, Bull. Bas. Sci. Res., 5, 33 (1933).
Hughes and Bovie, J. Med. Res., 39, 233 (1918). R. de Fazi, J. Ind. Eng. Chem., 13, 365 (1921). Tanne, F. W., Chem. Rev., 1, 397 (1925). Oster, R. H., J. Gen. Phys., 8, 71 (1934).
Loofbourow and Heyroth, NATURE, 133, 909 (1934). Heyroth and Loofbourow, Bull. Bas. Sci. Res., 5, 33 (1933).
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FARDON, J., NORRIS, R., LOOFBOUROW, J. et al. Stimulating Materials obtained from Injured and Killed Cells. Nature 139, 589 (1937). https://doi.org/10.1038/139589a0
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DOI: https://doi.org/10.1038/139589a0
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