Fig. 5From: Cryptotanshinone chemosensitivity potentiation by TW-37 in human oral cancer cell lines by targeting STAT3–Mcl-1 signalingTW-37 augments the chemosensitivity of cryptotanshinone in human oral cancer cell lines by modulating STAT3–Mcl-1 signaling. a The cell viability was measured using the trypan blue exclusion assay. b FACS analysis of annexin V/PI staining. All bar graphs represent mean ± SD of three independent experiments. c Protein levels of p-STAT3 (Y705), signal transducer and activator of transcription 3 (STAT3), and myeloid cell leukemia-1 (Mcl-1) were determined using Western blotting. Actin was used as a loading control. The bar graphs represent mean ± SD of three independent experiments. *P < 0.05Back to article page