FN1 and neoplasm: According to analyses of fluorescence-activated cell sorter (FACS) and RT-PCR, ascitic cells expressed higher levels of mesenchymal markers including N-cad, VIM and FN (p < 0.01, <0.001, <0.01, respectively), while cells from the primary tumour expressed higher levels of epithelial marker E-cad (p < 0.05) (Figs. 1B, S1C).