A study was made of the modifying effect of a short-term induced hyperglycemia on the effectiveness of X- and neutron-radiation. It was shown that relative biological effectiveness of 6.0 MeV neutrons emitted by cyclotron U-120 was 2.33, in relation to standard X-radiation, as determined by the survival rate of irradiated HeLa cells. The short-term induced hyperglycemia increased the effectiveness of both X- and neutron-radiation; the changeability of the latter, however, was decreased as compared to X-radiation.

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