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慢病毒载体转染48 h A549细胞和A549/CDDP细胞荧光图（×100）。A：A549/I；B：A549/C；C：CDDP/I；D：CDDP/C。左为明场，右为暗场。转染率为暗场中发绿色荧光的细胞数与明场中细胞总数的比值。可以观察到，各组的转染率均在90%以上。

Fluorography of A549 cells and A549/CDDP cells at 48 h after transfection (×100). A: A549/I; B: A549/C; C: CDDP/I; D: CDDP/C. Bright fields on the left and dark fields on the right. Transfection rate is calculated as ratio between green-fluorescent cell count in the dark field and cell count in the bright field. The transfection rates of 4 groups are all above 90%.