[Reaction of a population of HeLa tumor cells in the stationary stage of growth to irradiation at different rates].

The early stages of a repopulation process of HeLa cells under the action of irradiation 5 Gy dose and an influence of a preliminary 0.1 Gy dose irradiation at that process were investigated. As it was shown the fraction of cells with a great proliferation potential appeared in one day after lethal 5 Gy dose irradiation of the resting HeLa cells. If the other irradiation regime was used: 0.1 Gy dose plus 4.9 Gy dose in 3 min after the first action, the part of cells with a great proliferation potential became considerably less.