Purpose To explore the difference of expression and prognostic significance of SP1,KLF4 and p21 in low grade ovarian serous carcinoma(LGSC) and high grade ovarian serous carcinoma(HGSC).Methods The expression of SP1,KLF4 and p21 protein was examined with immunohistochemistry EliVision method in cases with LGSC and HGSC.Kaplan-Meier analysis and Cox multivariate survival analysis were used to assess the impact of SP1,KLF4 and p21 expression on prognosis of LGSC and HGSC.Results SP1,KLF4 and p21 expression we...