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Relative quantitative changes of hTERT mRNA in HepG2 (lanes 1-3) and QBC939 (lanes 4-6) cell lines. A significant higher expression of hTERT mRNA was observed in both HepG2 and QBC939 cells after being transfected with pCMV-X vector (lanes 2 and 5) compared to those transfected with OPTI-MEM medium (lanes 1 and 4) and pcDNA3 (lanes 3 and 6). aP<0.05 vs others.
