Abstract
Chronic whole-body γ-irradiation of rabbits at a dose-rate of 0·05 Gy/9h (92·6 µGy/min.) induced a cytogenetic adaptive response in peripheral blood lymphocytes with an inductive dose of up to 1·5 Gy when the challenge dose of 1·5 Gy was given either in G0 or in G2 phase.