PECAM1 and fetal growth restriction: Flow cytometry analysis of ECFC surface markers indicates that the overall endothelial identity (assessed as the CD31+/CD146+ ratio on CD45− viable cells) is preserved in IUGR-ECFCs with no significant difference compared with CTRL suggesting that IUGR does not alter the general endothelial lineage composition of circulating ECFCs, contrary to males [36].