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Effect of concentrations of chlorpromazine (10–100 μM) and wortmannin (10–100 nM) on GFP expression mediated by Lipofecamine 2000/pGFP-N2 complexes against Hep-2 cells. a, c The expression of GFP was imaged by inverted fluorescence microscope (10 × 20); b, d contrast cells in bright field. Scale bar = 50 μm
