The symmetry of radiation-induced chromatid exchanges in relation to the cell cycle in Chinese hamster cells in vivo and in vitro

The symmetry of radiation-induced chromatid exchanges was studied in relation to the cell cycle in Chinese hamster cells in vivo and in vitro. Both in vivo and in vitro, the ratio between symmetrical and asymmetrical chromatid exchanges was about 1 to 1 during G2 and S phase of the cell cycle.