CDH1 and ovarian serous adenocarcinoma: Similarly, expression of CD44v8-10 protein in patient-derived cell line lysates by western blot displayed a trend of co-expression of CD44v8-10 with E-cadherin, or CD44s with vimentin, in a mutually exclusive fashion (Fig 4B), confirming the qPCR data indicating that CD44v8-10 is an epithelial marker and CD44s a mesenchymal marker in high grade serous ovarian cancer.