Khalil, F K Alpha-fetoprotein levels in placenta, maternal, and cord blood in normal and pathologic pregnancy. [electronic resource] - Obstetrics and gynecology Jul 1979 - 117-9 p. digital Publication Type: Journal Article ISSN: 0029-7844 Standard No.: 10.1097/00006250-197907000-00026 doi Subjects--Topical Terms: FemaleFetal Blood--analysisHumansPlacenta--metabolismPre-Eclampsia--bloodPregnancyPregnancy Complications--bloodalpha-Fetoproteins--analysis