Figure 6

Demonstration of inhibitory effects of selective STAT3 inhibitor AG490 on the proliferation and STAT3 phosphorylation in CAOV-3 and OVCAR-3 cells by Hematoxylin and eosin morphological staining (A), MTT cell proliferation assay (B), viable and unviable cell counting (C) and p-STAT3 oriented immunocytochemical staining (D). Normally cultured (N), resveratrol-treated (Res) and Wnt selective inhibitor XAV939-treated cells (XAV939) were cited as normal, effective and ineffective controls, respectively.