Table S1.

The 25(OH)D level in serum of mice

Group	Mean (ng/mL)	Standard deviation
Negative control	15.769	2.564
VD control	22.385#	2.429
DMBA model	13.692*	1.289
4-week VD (initiation)	15.769	2.564
8-week VD (promotion)	16.076	2.311
20-week VD (initiation + promotion)	16.769#,Δ	1.918

Notes: Compared with negative control group, the 25(OH)D level of serum in DMBA model was significantly decreased (*P<0.05), while that in VD control and 20-week VD significantly increased (^#P<0.05). Compared with DMBA model, the 25(OH)D level in 20-week VD was dramatically increased (^ΔP<0.01).

Abbreviations: DMBA, 7, 12-dimethylbenz [a] anthracene; VD, vitamin D3.