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Abstracts |

Effects of Laser Radiation on Biological Systems.

Edmund Klein, M.D.; Elias Cohen, M.D.; Julian Ambrus, M.D.; and Samuel Fine, M.S.
Ann Intern Med. 1964;60(4):725-726. doi:10.7326/0003-4819-60-4-725_3
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Studies on the effects of laser radiation in normal and tumor bearing animals and on isolated biological systems have been carried out. Animals included hamsters, mice, rats, and monkeys. The in vitro systems included viable mammalian cells, unicellular organisms and macromolecular preparations of biological origin. Our studies were carried out at 10,600 Å, 6943 Å and 6328 Å, at energy levels from the millijoule region to more than 500 joules, peak power levels exceeding 100 Mw and pulse repetition frequencies of 1/sec. The qualitative and quantitative aspects of the biological effects varied with the characteristics of the radiation. Effects on




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