Temporal variation of SLC24A5 SNP sequences in skin surface scrapings from 2 donors.

<p>The forearms of two donors were marked with a template indicating five 25 x 25 mm squares (Upper panel). The surface skin in each square was scraped at approximately weekly intervals and the <i>SLC24A5</i> sequences determined from the isolated DNA. The buccal cell and blood genotype of the Caucasian donor was A/A (middle panel) and the buccal cell genotype of the Asian donor was G/G (lower panel). The different symbols represent DNA sequences found by scraping each of the squares. The vertical axis indicates A/A or G/G for Sanger sequences that have 20% or less of the minor allele and A/G for all other ratios of allele sequences (see reconstruction experiment <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0198011#pone.0198011.g002" target="_blank">Fig 2A</a>).