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EGFR expression in 3 varying grades of invasive human oral squamous cell carcinoma line. The OSC-19, OSC-20 and HOC313 cell lines were evaluated for variations in (A) EGFR mRNA, (B) EGFR protein and (C) pEGFR expression levels. Data are presented as a fold difference in expression level relative to the mean expression of the normal human dermal fibroblast cells. EGFR, epidermal growth factor receptor; p, phosphorylated; mRNA, messenger RNA.
