Figure 2

Normalised concentration of biochemical composition of vulva skin from the average of locations 1 to 6. (a) Water, (b) lipid, (c) sO2, (d) blood fraction. Two-sided Mann–Whitney U-test was performed yielding p-value of annotation legend: ns: non-significant, p > 0.05; *p < 0.05; **p < 0.01; ***p < 0.001; ****p < 0.0001.