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15 January 1996 Influence of He-Ne laser irradiation on giant chromosomes
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Influence of He-Ne laser irradiation (lambda - 632.8 nm, power density - 1.5 mW/cm2) on polytene chromosomes of salivary glands cells of Chironomus plumosus in different conditions of exposure was studied. Living larvae or isolated salivary glands were exposed to irradiation. He-Ne laser irradiation was stated to influence the functional activity of polytene chromosomes. The response of the genetic apparatus to the laser light action was shown to depend on the irradiation dose and fractional character of the dose exposure, on the initial functional state of chromosome loci and may be manifested both by activation and inhibition of definite regions of the genome. The phenomenon of adaptation of the genetic system to He- Ne laser irradiation is revealed.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gregory E. Brill, Nadezda P. Panina, Vadim K. Sonin, and Svetlana I. Belyanina "Influence of He-Ne laser irradiation on giant chromosomes", Proc. SPIE 2630, Effects of Low-Power Light on Biological Systems, (15 January 1996);

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