The Rh factor and erythroblastosis fetalis.
D035843:Biomedical Research; D004893:Erythema Nodosum / Q000517:prevention & control*; D004899:Erythroblastosis, Fetal; D009657:North Carolina; D012204:Rh-Hr Blood-Group System
D012204:Rh-Hr Blood-Group System
ERYTHEMA NODOSUM/prevention and control