Table 2.

PD-1 and PD-L1 content in deciduas of RM and normal control group by real time RT-PCR

Group	n	PD-1	PD-L1	β-actin	Relative value of PD-1	Relative value of PD-L1
RM	19	2.58 ± 0.59	26.8 ± 7.75	25.9 ± 2.75	1.43 ± 0.64	1.17 ± 0.37
N	22	2.74 ± 0.81	55.6 ± 20.7	26.3 ± 3.60	1.53 ± 0.71	2.67 ± 1.23

Note: Relative value have been correction, choosing the lowest normal control value in each target gene group as a calibration standard for ratio correction.