PRF1 and Infertility: There were not significant differences either in the total number of CD56+cellsbetween the RPL group and the control group (P=0.2) or between the RPL group and the infertile group (P=0.36).The percentage of CD69+lymphocytes in RPL group was significantly higher than in the infertility group (P=0.004).There was a statistically significant difference in Perforin levels between RLP and control (P=0.001) as well as RPLand infertile (P=0.002) groups.