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Among flavonoids, chalcones have been identified as interesting compounds having antioxidant, antimutagenic and antitumour properties. In this study we have evaluated the clastogenicity of plicatin B on human lymphocytes (whole blood and isolated lymphocytes) and its anticlastogenic activity, in the same cellular systems, using mitomycin C (MMC), radio-mimetic bleomycin (BL) and hydrogen peroxide...