In addition, gene expression profiles that are linked with chemoresistance have been described in ascites tumour cells: the expression of the stem-cell markers Oct4, EpCam and CD44 has been shown to be upregulated in ascites tumour cells from chemoresistant samples,38 and might link the stem-cell properties of resistant samples with increased efficiency in drug efflux.88 The gene discussed is EPCAM; the disease is neoplasm.