Figure 1: Effective sCLU expression in A549 cells after pCDNA3.1-sCLU transfection. (A) sCLU protein expression was detected in A549DDP cells by western blot assay. (B) Transfection efficiency shown by fluorescence microscopy. (C) sCLU protein expression was detected in pCDNA3.1-sCLU transfected A549 cells by western blot assay (*P<0.05).