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NRAS mRNA expression. a Expression levels of NRAS mRNA in benign melanocytic nevi (n = 8) and metastatic melanoma (n = 82). b Correlation plot showing the expression of NRAS in each tumor in relation to BRAF expression. c Expression levels of NRAS mRNA in patients experiencing a clinical benefit or progressive disease (PD) 3 months after commencement of chemotherapy. Asterisks denote significance levels: *p ≤ 0.05, **p ≤ 0.005
