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Fig. 3. STAT3 target gene expression level in STAT3-C-transfected SCCHN cells (UM-22B). Immunoblotting of representative STAT3-C-transfected clones and vector control-transfected clones was performed to determine expression levels of (A) Bcl-xL and (B) cyclin D1 and (C) a ß-actin loading control.