Levels of angiogenic markers in second-trimester maternal serum from in vitro fertilization pregnancies with oocyte donation

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To determine whether differences exist in angiogenic placental growth factor (PlGF) and antiangiogenic soluble vascular endothelial growth factor receptor 1 (sVEGFR-1; both being early markers of placental ischemic disease) in oocyte-donation (OD) pregnancies, compared with autologous in vitro fertilization (aIVF) and spontaneous pregnancies.