Irradiation with He--Ne laser can influence the cytotoxic response of HeLa cells to ionizing radiation.

@article{Karu1994IrradiationWH,
  title={Irradiation with He--Ne laser can influence the cytotoxic response of HeLa cells to ionizing radiation.},
  author={Tiina I. Karu and Ludmila V. Pyatibrat and Galina S. Kalendo},
  journal={International journal of radiation biology},
  year={1994},
  volume={65 6},
  pages={691-7}
}
A monolayer of HeLa cells in plateau-phase of growth was exposed to He--Ne laser radiation (632.8 nm, 100 J/m2) either 5, 60 or 180 min before gamma-irradiation (0.2-10 Gy, 6.75 Gy/min). In the case of a 5 min interval between the two types of irradiations the survival curve was practically identical to the survival curve of the cells after gamma-irradiation only. In the case of He--Ne laser exposure 60 min before gamma-irradiation with doses > 5 Gy, a fraction of more resistant cells was… CONTINUE READING