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Photoprotective activity of the extracts. UV-B-induced cytotoxicity was assessed on human skin fibroblasts (AG01523) pre-treated with the indicated extracts for 24 h. Dimethyl sulfoxide (DMSO)-treated cultures served as controls (C). UV-B-untreated control set to 100%. Bars ± SD. * p < 0.05; ** p < 0.01.
