Spontaneous exchange of blood between mother and fetus, preventing hemolytic disease in newborn.
D004899:Erythroblastosis, Fetal / Q000517:prevention & control*; D005260:Female; D005333:Fetus / Q000502:physiology*; D006402:Hematologic Diseases; D006801:Humans; D007231:Infant, Newborn; D009035:Mothers; D011247:Pregnancy / Q000502:physiology
ERYTHROBLASTOSIS, FETAL/prevention and control; FETUS/physiology; PREGNANCY/physiology