“…immunohistochemical analysis of clinical samples we used the automated Ventana Benchmark Ultra platform (Roche, Basel, Switzerland) as described previously (34). The sections were immuno-stained with i) vimentin (1:400, M7020, DAKO Denmark A/S, Glostrup, Denmark), ii) epithelial membrane antigen (1:200, M0613, DAKO), iii) smooth muscle actin (1:2,000, A2547, Sigma-Aldrich, St. Louis, MO, USA), iv) cytokeratin 8 (1:100, NCL-L-CK8-TS1, Leica Biosystems Inc., Lincolnshire, IL, USA), v) cytokeratin AE1/AE3 (1:100, NCL-L-AE1/AE3, Leica Biosystems), vi) desmin (1:100, M0760, DAKO), vii) S100 (1:2,000, Z0311, DAKO), viii) GFAP (1:2,000, N1506, DAKO), or ix) SNF5 (1:2,000, ab58209, Abcam, Cambridge, UK).…”