Fig. 2.

Immunohistochemical analysis of ERCC1 using antibodies 8 F1 (a) and FL-297 (b) and of XPF using SPM228 (c) in serial sections of nasopharynx squamous cell carcinoma. The 8 F1 ERCC1 and the SPM228 XPF antibodies show cell nuclear reaction in comparable areas of serial sections, while the FL-297 ERCC1 antibody shows mainly perinuclear and cytoplasmic reaction in comparable areas of serial sections. The reaction of FL-297 antibody is more extended than the one of the other two, which fit each other. Bars = 50 μm