Abstract
The patterns and rates of recovery in synchronous populations exposed to gamma-radiation at different stages of the cell cycle were determined by obtaining full survival curves after dose fractionation treatment. The D0 values of irradiated cells were similar to those of unirradiated cells at the same stage of development. The rate of recovery of the shoulder was shown to vary slightly at different times in the cycle and, furthermore, was more rapid immediately after irradiation than at later times.