Extraction technology for active constituents in Acanthopanax senticosus and comparison on its contents of A. senticosus from various habitats Determination of eleutherosides B and E from different parts of Acanthopanax henryi by RP-HPLC Determination of eleutherosides B and E from different parts of Acanthopanax henryi by RP-HPLC Chemical constituents from branches of Daphne genkwa Comparative pharmacokinetics of syringin, eleutheroside E and isofraxidin in rat plasma after intravenous administration of each monomer and Ciwujia injection