The concentration of fetal red blood cells in first-trimester pregnant women undergoing uterine aspiration is below the calculated threshold for Rh sensitization.
Horvath S, Tsao P, Huang ZY, Zhao L, Du Y, Sammel MD, Prak ETL, Schreiber CA. The concentration of fetal red blood cells in first-trimester pregnant women undergoing uterine aspiration is below the calculated threshold for Rh sensitization. Contraception. 2020 07; 102(1):1-6.