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. 2003 Dec 9;89(12):2277–2283. doi: 10.1038/sj.bjc.6601427

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Copyright © 2003 Cancer Research UK

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Apoptotic frequency for four colon adenocarcinoma cell lines at different times after a range of X-ray doses: 0.5 Gy (•), 1.0 Gy (▴), 2.0 Gy (▪) and 5 Gy (♦). Error bars represent±1 s.e.m.