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Effect of dexamethasone on the survival of mice after irradiation. C57BL/6J mice were treated with a single dose (15 Gy) to the entire thorax. Dexamethasone treatment increased the survival rates of irradiated mice. The survival rates at 180 days in Sham (n = 10), RT group (n = 20), and RT + DXM group (n = 20) are 100.0%, 35.0%, and 70.0%, respectively (RT versus RT + DXM group, P = 0.0323). The survival rate was analyzed using the Kaplan-Meier method.
