Nonflavonoid constituents from leaves of Apocynum venetum Cloning of β-amyrin synthase gene from Panax quinquefolius and its bioinformatics analysis Impacting of polymorphism of β-amyrin synthase from Glycyrrhiza uralensis on its catalytic efficiency Correlation analysis between single nucleotide polymorphism of β-amyrinsynthase and content of glycyrrhizic acid in Glycyrrhiza uralensis Cloning, prokaryotic expression, and functional identification of β-amyrin synthase cDNA of Psammosilene tunicoides Gene cloning and expression level of bAS and their correlation with content of saponins in Eleutherococcus senticosus Cloning,Characterization and Real-time RT-PCR Analysis of a Key Gene beta-Amyrin synthase for Saponin Biosynthesis in Barbarea vulgaris Cloning,Characterization and Real-time RT-PCR Analysis of a Key Gene beta-Amyrin synthase for Saponin Biosynthesis in Barbarea vulgaris Chemical constituents from Euphorbia tirucalli Studies on Chemical Constituents in Herba of Lysimachia davurica Studies on the Chemical Constituents of Williams Elder (Sambucus wilfamsii) Studies on the Chemical Constituents of Isodon parvifolia (Batalin) Hara Chemical constituents from frankincense Chemical constituents of Ficus tikoua Studies on Chemical Constituents of Cichorium intybus L. Chemical constituents from Clerodendrum canescens Chemical constituents from roots of Ficus auriculata Chemical constituents in Rabdosia excisa Chemical constituents in Rabdosia excisa Chemical constituents from Euphorbia tirucalli Chemical constituents in whole herb of Cardiospermum halicacabum (I) Studies on the Chemical Constituents of Vaccinium scopulorum W. W. Smith Studies on Chemical Constituents from Solvent Extracts of Poria cocos (Schw.) Wolf Studies on Chemical Constituents of Marsdenia oreophila Effects of space flight on glycyrrhizic acid- related gene mutation in Glycyrrhiza uralensis Chemical constituents from stem barks of Daphne giraldii Chemical constituents from stem barks of Daphne giraldii Antitumor constituents from seeds of Caesalpinia minax Antitumor constituents from seeds of Caesalpinia minax The Chemical Components of Lobelia davidii Franch. Chemical constituents in whole herb of Euphorbia lunulata Study on chemical constituents from Gnaphalium affine and their anti-oxidative activities Studies on the Constituents of Marsdenia officinalis Tsiang STUDIES ON THE CONSTITUENTS OF CYNANCHUM OFFICINALE (HEMSL.) TSTANG ET ZHENG THE STUDY ON TRITERPENOID FROM LEAVES OF ALNUS HIRSUTA TURCZ.