Primary mesothelial cells from WT and Nf2+/− mice grown in DMEM showed the typical cobblestone-like morphology similar as, e.g., the human mesothelioma cell line ZL55 consisting of cells with an epithelioid morphology used in previous studies (Blum and Schwaller 2013) (Fig. 1a). This evidence concerns the gene NF2 and mesothelioma.