Immunohistochemistry (IHC) was performed as published previously [47 (link)] [7 (link)]. Tumor tissues were dissected, fixed in 4% formalin overnight and processed in paraffin wax. Signal detection was performed semiautomatically in the Autostainer 480 S (Medac, Hamburg, Germany). Nuclei were stained by hematoxylin. Immunofluorescence staining (IF) was performed as published [15 (link)] [47 (link)]. Nuclei were counterstained by Hoechst 33342. See S1 Table for antibody details and dilution ratios.
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