Fig. 2

The representative examples showed stable transfectants procured by different quantity of purified lentivirus. a The ACC-M cells were stable transfected by 0.01 μl purified lentivirus. b The ACC-M cells were stable transfected by 0.1 μl purified lentivirus. c The ACC-M cells were stable transfected by 1 μl purified lentivirus. The cell transfection rate was directly observed by green fluorescent protein (GFP) positive, which reached to 90 %. (Original magnification: ×100)