Fig. 1

Representative immunohistochemical staining of STXBP4, TP63 (ΔNp63), p53, VEGFR2, TBB3, STMN1, and PD-L1. A total of 144 LSCC samples (formalin-fixed and paraffin-embedded sections) were stained immunohistochemically (×200, scale bar 200 μm), and classified into positive- and negative-expression groups according to the expression score evaluated by a semi-quantitative method as described in “Methods”