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. 2019 Sep 26;14(9):e0215886. doi: 10.1371/journal.pone.0215886

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© 2019 Li 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 credited.

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Fig 3 — (A) Growth inhibition by Ptox^Pdp of the different hepatocellular carcinoma cells lines. The IC_50s for Ptox^Pdp and Ptox^Pdp-Cu were 3.89 ± 0.51 and 1.52 ± 0.20 μM against HepG2 cells, respectively; and 11.01 ± 0.63 and 2.95 ± 0.40 μM against HCCLM3 cells, respectively. (B) Inhibition of HepG2 cell colony formation by the different indicated concentrations of Ptox^Pdp; the static data are shown in columns (**P < 0.05; ***P < 0.001).