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. 2009 Dec 29;2009:305908. doi: 10.1155/2009/305908

Figure 2.

Figure 2

Immunohistochemistry performed on tissue microarrays. (a) EGFR protein expression in all tumor cells with focal intense complete membranous staining (+3); (b) EGFR negative case showing mild cytoplasmic focal staining; (c) ERCC1 protein strong nuclear positivity; (d) ERCC1 protein expression with equal intensity in neoplastic cells and stromal fibroblasts (regarded as negative staining); (e) MET strong cytoplasmic and membraneous protein expression; (f) Lack of MET protein expression in tumor cells; (g) p-53 strong nuclear protein expression; (h) p-53 expression in a small fraction of tumor cells (regarded as negative staining). Original magnification x20; insets (a), (c), and (g) x200; insets (b), (d), (e), and (h) x400.