(A) EdU staining of WT or Mettl14 cKO skin after pulse-chase labeling. Skin samples were counterstained with antibody against β4-integrin. Note reduced EdU label-retaining cells in cKO skin epidermis. Arrows indicate Edu-positive cells. (B) Label-retaining cells in WT or Mettl14 cKO skin were quantified and shown as box plots. The plot indicates the mean (solid diamond within the box), 25th percentile (bottom line of the box), median (middle line of the box), 75th percentile (top line of the box), 5th and 95th percentile (whiskers), 1st and 99th percentile (solid triangles) and minimum and maximum measurements (solid squares). n=6 (biological repeats), P<0.05 (Student's t-test). n=19, P<0.01 (Student's t-test). 