Fig. 6

Representative image of multiplex immunohistochemistry. a Co-immunostaining representative markers in OSCC. The boxed area was magnified and displayed on the right panels. Scale bar: 200 μm. b The staining of DAPI in OSCC. c Co-immunostaining of DAPI and FEN1 in OSCC. d Co-immunostaining of DAPI and PD-L1 in OSCC. e Co-immunostaining of DAPI and HLA-DR in OSCC. Scale bar: 25 μm