91 paired, paraffin-embedded primary specimens were stained for KDM5B by immunohistochemistry (IHC), as described previously [65 (link)]. The sections were incubated with anti-KDM5B (dilution ratio, 1:1000; No. ab181089 Abcam, Cambridge, UK) at 4°C overnight followed by secondary anti-rabbit HRP-conjugated antibody. The expression changes of KDM5B were evaluated blindly by two professional pathologists. Cancer cells were counted under the microscope as previously described [65 (link)].
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