Comparison of temporal small RNA gene expression from Mus musculus right hemisphere. The RNA-seq data comprise 5 groups at ages: 2, 9, 15, 24 and 30 months. Jena Centre for Systems Biology of Ageing - JenAge (www.jenage.de) Overall design: 25 samples in 5 groups: 2 months (5 samples), 9 months (5 samples), 15 months (5 samples), 24 months (5 samples), 30 months (5 samples)