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High expression of miR-17, miR-19a, miR-21, miR-126 and miR-149 is associated with melanoma tumor grade. Expression of miR-17, miR-19a, miR-21, miR-126 and miR-149 in the TCGA database for 216 independent melanoma patient samples according to Clark level (Level 1 is the least aggressive and Level V is the most aggressive).
