Fig. 4From: Long-term primary culture of a clear cell ovarian carcinoma reveals an epithelial–mesenchymal cooperative interaction a, b Phase contrast images depicting the coexistence of epithelial (asterisks) and mesenchymal (arrowheads) cellular compartments after 8 weeks in culture. c, d E-cadherin immunoreactivity is shown in epithelial cells (arrows) but not in mesenchymal cells (arrowheads). e, f Vimentin immunostaining is positive mainly in the mesenchymal cells (arrows), yet some positivity is also observed in the cytoplasm of epithelial-like cells (arrowheads)Back to article page