Objective:To study the MMP2,MMP9 content in preeclampsia maternal serum and placental bed hemodynamic abnormality.Methods:A total of 50 preeclampsia patients in our hospital from 2011 March to 2013 August were enrolled as observation group,50 cases of normal pregnant women received prenatal care and delivery in our hospital during the same period were enrolled in control group.Then protein contents of MMPs in serum were assayed by ELISA,protein contents of MMPs in placental tissue were assayed by western-bl...