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The chemical structure and biological activity of OPD'. (A) The chemical structures of OPD' and OPD. (B) The viability of LNCaP cells was examined by Cell Counting Kit-8 assay after treatment with OPD' or Sor (positive control) for 24 h. The concentrations that induced 50% growth inhibition (IC50) were calculated (n=3). * P<0.05 vs. Sor. OPD, Ophiopogonin D; Sor, sorafenib.
