The employed antibodies and the particular situations are described in Desk S1. Nuclei were counterstained with DAPI (forty nine.6-Diamidino-2-phenylindole dihydrochloride, .1 ng/ml, Sigma, Munich, Germany)
For cryosections, tumor specimen had been embedded in Tissue Tec O.C.T. TM (Sakura Finetek, Alphen aan den Rijn, The Netherlands) and frozen in liquid nitrogen. Frozen specimens were sliced into…