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Problem
Does programmed death‐1 (PD‐1)/programmed death ligand‐1 (PD‐L1) expression on the T‐cell subsets such as T helper (Th) 1, Th17, and Treg cells differentiate women with recurrent pregnancy losses (RPL) from normal fertile women?
Method of study
The study was designed as a prospective cohort study. Forty‐five women with two or more RPL of unknown etiology and twenty fertile women who had...