Figure 2 of Parfitt, Mol Vis 2016; 22:518-527.

Figure 2. Gene expression levels of 3-month-old and 2-year-old male and female mouse eyelids. Expression results for each gene were gathered from RNA sequencing data as reads per length of transcript in kilobases per million mapped reads (RPKM). Genes with RPKM values equal to or greater than 0.125 were considered to be expressed.