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The protective activities of hamamelitannin (2 , 5-di-O-galloyl-hamamelose) in Hamamelis virginiana L. and its related compound, gallic acid, on damaged murine skin fibroblasts induced by UVB irradiation were investigated. In order to exclude the UV absorbing effect of the compounds, the protection study was performed such that the fibro-blasts were pretreated with hamamelitannin or gallic acid...
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