3.(2) The expressions of ET 1 and ET 1 mRNA were found in syncytiotrophoblast of placentalvillus and in the endothelium of fetal vessels. These positive signals were higher in PIH than in NP.
4.(2)In IUGR, the positive expression rates of IgM and C3 in the vessels of uteroplacenta and placentalvillus(40% and 40% respectively)were significantly higher than those of NTP(P< 0.001 for all) ,but negative expression was shown in NTP.