The marks * and ** mean the signifi cance of difference (*: P < 0.05, **: P < 0.01) between control and each treatment tested by the Student’s t-test.
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| Figure 1: The survival rates of cells in chemical treatment (left) and X-ray irradiation (right). The marks * and ** mean the signifi cance of difference (*: P < 0.05, **: P < 0.01) between control and each treatment tested by the Student’s t-test. |
