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. 2012 Mar 29;7(3):e34545. doi: 10.1371/journal.pone.0034545

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Lagadec et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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SF_8Gy in clonogenic survival assays (A) and mammosphere assays (B) were calculated. (C) Radiation doses required for 50% cell killing were calculated for normoxic and hypoxic conditions and expressed as ratios (hypoxic∶normoxic; oxygen enhancement ratio (OER)).