Research Paper Volume 10, Issue 10 pp 3017—3041

Age- and sex-dependent changes in levels of circulating brain-enriched microRNAs during normal aging

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Figure 2. Age-dependent changes in plasma concentrations of the tested brain-enriched miRNAs. Data are presented as the average and standard deviation for each age group. 
X axis: age; Y axis: number of miRNA copies per 1 μl of plasma.