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Signaling pathway activation in thyroid cancer samples. Immunohistochemical staining of representative Papillary thyroid carcinoma (PTC) samples with anti-phospho-AKT1, anti-phospho-p65 NF-kB, anti-phospho-ERK1/2 at 40× magnification, scale bar = 50 μm. High and low staining for each protein are defined as described in the Materials and Methods section.
