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. 2019 Oct 30;17(4):1559325819883479. doi: 10.1177/1559325819883479

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 6. — The effects of taurine and piperine on the radiosensitivity of HELF cells. A, The chemical structure of taurine. B, The chemical structure of piperine. C, The effects of 2 Gy ionizing radiation with or without taurine (10-60 mM) pretreatment on cell proliferation. *P < .05. D, The effects of 2 Gy ionizing radiation with or without piperine (10-80 μM) pretreatment on cell proliferation. E, Representative images of cell plates of the clonogenic assay. F, The effect of taurine on the low-density lipoprotein (LDH) release of HELF cells. HELF cells were treated with taurine (10 mM) 6 hours before being exposed to 10 Gy ionizing radiation. G, The effect of piperine on the LDH release of HELF cells. HELF cells were treated with piperine (20 μM) 6 hours before being exposed to 10 Gy ionizing radiation. HELF indicates human embryonic lung fibroblast.