Fig. 2

Correlation between levels of skin pigmentation and molybdenum in the skin. a Molybdenum levels (means ± SD) spontaneously accumulated in dorsal skin from wild-type hairless mice (WT, n = 4) and HL-RET-mice of lines 242 (242, n = 4) and 304 (304, n = 4) at 4 months of age are presented. Significant differences (**p < 0.01) were evaluated by the Tukey-Kramer test. b Correlations between levels of skin pigmentation (L* values) and levels of molybdenum spontaneously accumulated in dorsal skin of wild-type hairless mice (WT, n = 4) and HL-RET-mice of lines 242 (242, n = 4) and 304 (304, n = 4) at 4 months of age are shown. Results analyzed by Spearman’s rank correlation coefficient are presented due to no normal distribution