Quantitation confirmed no significant difference in the mean number of melanocytes per anagen HF in P10 HIRA WT (6.24 ± 1 DCT+ cells, n = 3 pups) and HIRA KO (6.97 ± 1.6 DCT+ cells, n = 3 pups) (Figure 4e). This evidence concerns the gene HIRA and hydrops fetalis.