Figure 1.

Experimental schedule – the experimental groups, except for the naïve group, were sensitized by painting with 1-fluoro-2,4-dinitrofluorobenzene on days 1, 2, and 3. Mice were challenged by 1-fluoro-2,4-dinitrofluorobenzene on days 7, 9, 11, and 13. The naïve group was treated with vehicle (acetone: olive oil) in the same way. Methanol extract of Brassica oleracea var. capitata L. and DEX groups were topically treated with methanol extract of Brassica oleracea var. capitata L. (30, 100, or 300 μg/ear in ethanol and acetone: olive oil) or DEX (75 μg/ear in ethanol and acetone: olive oil) for 6 days from day 8–13. All animals were sacrificed on day 14