Fig. 1
General experimental protocol. The heart was exposed to a single fraction of 50 mGy or 3.5 Gy of X-radiation. Peripheral blood was collected before (−24 hours) and after (+6, 30, 72 and 96 hours) irradiation and plasma prepared. In some studies, peripheral blood was collected at 15, 30 and 60 minutes after irradiation.