[Reduced effect of ionizing radiation during uneven heating of tissues by UHF-field]

The differential heating (35-43.5 degrees C, 30 min) of sarcoma 45 causes an increase of its growth due to the growth of the tumour regions uneffected by the damaging temperature and having the temperature comparable to the normal temperature of experimental animal. The differential heating just after gamma-irradiation decreases the damaging effect of ionizing radiation on tumour tissue, or to be more precise, on the tumour regions with subhypothermal temperature. Possible bioenergetic mechanisms of the trophic and radioprotective effects at differential heating of tumours by the electric UHF-field are discussed.