Heazell, A E P Formation of syncytial knots is increased by hyperoxia, hypoxia and reactive oxygen species. [electronic resource] - Placenta Apr 2007 - S33-40 p. digital Publication Type: Journal Article ISSN: 0143-4004 Standard No.: 10.1016/j.placenta.2006.10.007 doi Subjects--Topical Terms: AdultAnaerobiosisFemaleFetal Growth Retardation--etiologyHumansHyperoxia--complicationsHypoxia--complicationsInhibitor of Apoptosis Proteins--analysisPlacenta--chemistryPre-Eclampsia--etiologyPregnancyReactive Oxygen Species--metabolismTrophoblasts--chemistry