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. 2020 Sep 24;46(6):2115–2125. doi: 10.3892/ijmm.2020.4736

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Copyright: © Zhu et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Cytotoxicity of NK cells stimulated with TGF-β1. (A-F) The cytotoxicity of NK92MI cells (control and pre-treated with TGF-β1) treated with TGF-β1 for 1, 3 and 7 days was analyzed by LDH cytotoxicity assay. Target:Effect indicates the ratio of NK92MI cells to WSU-HN4 or SCC-9 cells. (G and H) The number of adherent NK92MI cells pre-treated with TGF-β1 for 1, 3 and 7 days. Red arrows indicate NK92MI cells. ^*P<0.05, ^***P<0.001, ^****P<0.0001. Scale bars, 25 µm. NK, natural killer.