Three doses of 2 kJ/m² UVR increases serum 25(OH)D₃ but does not suppress CHS in female (initially) vitamin D₃-deficient mice.

<p>The shaved dorsal skin of female vitamin D₃-deficient BALB/c mice was irradiated (or not) with three daily doses of 2 kJ/m² UVR (+ UV). Mice were sensitized through the dorsal skin with DNFB (4 days after UV irradiation) and ears challenged 4 days later. Ear swelling measured after a further 24 h. In (A), serum 25(OH)D₃ levels were determined 24 h after the final UV irradiation, and 24 h after ear-challenge. In (B), ear thickness measurements are shown. Data is shown in (A) as mean ± SEM and in (B) as mean + SEM (n = 4 mice/treatment, *p<0.05 for + UV versus − UV).