Results The distribution of VEGF in placenta of normal group is similar to that of PIH group.They all are found in villous trophoblast,villous blood vessels and villous strome.

• 结果VEGF在正常妊娠胎盘和妊高征胎盘中分布基本一致，分布在滋养细胞、血管及绒毛间质。