Comparison between the two activities in COS-7 cells transfected with the recombinant vector containing the prolidase gene and the control cells showed parallel elevation with a constant ratio.

• 比较转染了带有氨酰基脯氨酸二肽酶基因的重组载体的COS-7细胞和对照组细胞中的两种酶活性，可以看到有平行的升高趋势及恒定的酶活性比值。