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. 2014 Dec 2;9:261. doi: 10.1186/s13014-014-0261-z

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© Gurtner et al.; licensee BioMed Central Ltd. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Clonogenic cell survival of A7, A431, FaDu, UT-SCC-14 and UT-SCC-15 cells irradiated with different total doses after three days incubation with normal medium (DMSO; o) or BIBW 2992 (•), plating directly after irradiation. Symbols and error bars represent means and standard deviations of three independent experiments (duplicates). The data were fitted according to the LQ model (dotted line = normal medium, solid line = BIBW 2992).* significant difference (for dose groups in comparison to control group).