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Comparison of the radiosensitivities of the seven CRC cell lines to X-ray irradiation. A. Cells were exposed to X-rays at different irradiation doses: 0, 2, 4, 6, and 8 Gy. After 14 days, the surviving fraction was calculated as a ratio of the number of colonies formed divided by the total number of cells plated times the plating efficiency. B. D0 values for each type of colorectal cancer cell line.
