CD4 and ovarian carcinoma: Statistical comparison of lymphocyte subsets between non-neoplastic ovaries and either stromal or intraepithelial ovarian carcinomas revealed significantly elevated CD3 (P<0.001), CD4 (P=0.002) and CD8 (P<0.001) positive stromal lymphocytes or significantly elevated CD20 (P=0.001), CD3 (P<0.001), CD4 (P<0.001) and CD8 (P<0.001) positive intraepithelial lymphocytes in ovarian carcinomas.