Advances in studies on active components of Saussurea lappa and their pharmacological actions Studies on chemical constituents of drugs to be added later during decoction of compound medicine(Ⅰ) volatile oils from root of Saussurea lappa A New Baccharane-Type Triterpenoid Isolated from the Roots of Saussurea lappa C. B. Clarke Cloning and homological comparison analysis on DNA fragments of processed pieces and fresh roots of Saussurea lappa Cloning and homological comparison analysis on DNA fragments of processed pieces and fresh roots of Saussurea lappa Study on chemical constituents from the roots of Saussurea lappa Study on chemical constituents from roots of Saussurea lappa STUDY ON CHEMICAL CONSTITUENTS OF SAUSSUREA LAPPA I