Chemical constituents of Acanthopanax senticosus and their free radical scavenging activities Chemical constituents of Clerodendrum lindleyi and their free radical scavenging activities Chemical constituents from stems and leaves of Humulus scandens Study on scavenging activity to DPPH free radical of different polarity components in Guizhou Miao medicine "bod zangd dak" Studies on free radical scavenging activities of extracts from fresh leaves of some Gymnosperms Chemical constituents of Clerodendrum lindleyi and their free radical scavenging activities Production of Melanin by the Fermentat ion of Auricularia auricula and Its Free Radical Scavenging Activity Studies on Scavenging Activity Against DPPH Free Radical in Fresh Leaves from Some Common Subtropical Plants of Garden and Afforestion in China Studies on Scavenging Activity Against DPPH Free Radical in Fresh Leaves from Some Common Subtropical Plants of Garden and Afforestion in China Chemical constituents of Acanthopanax senticosus and their free radical scavenging activities Studies on Free Radical Scavenging Activities of Extracts from Leaves of Some Subtropical Oil Trees