Fig. 2From: Nm23-H1 is involved in the repair of ionizing radiation-induced DNA double-strand breaks in the A549 lung cancer cell lineColony formation assay of the cells after irradiation. Cells were irradiated with different doses (0Gy, 2Gy, 4Gy, 6Gy and 8Gy) and then were cultured for 10–14 days. Colonies were counted after fixing and staining (*: p < 0.05)Back to article page