Objective To investigate the relationship between the expression of E-Cadherin,uridylyl phosphate adenosine(uPA) and breast cancer invasion,lymph node metastasis.Methods The expression of E-Cadherin and uPA in 120 cases of breast cancer was studied using immunohistochemical S-P method.Results The positive rate of E-Cadherin in breast adenoma,adenosis and breast carcinoma was respectively 85.0%,82.5% and 20.0% with significant differences among the three(P<0.05).Lymph node metastasis rate in patients with ne...