Chemical constituents of Ficus tikoua Cloning of β-amyrin synthase gene from Panax quinquefolius and its bioinformatics analysis The Chemical Components of Lobelia davidii Franch. Nonflavonoid constituents from leaves of Apocynum venetum Studies on the Chemical Constituents of Vaccinium scopulorum W. W. Smith Studies on Chemical Constituents from Solvent Extracts of Poria cocos (Schw.) Wolf 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 Studies on the Chemical Constituents of Isodon parvifolia (Batalin) Hara Chemical constituents from Euphorbia tirucalli Effects of space flight on glycyrrhizic acid- related gene mutation in Glycyrrhiza uralensis Chemical constituents in whole herb of Euphorbia lunulata Correlation analysis between single nucleotide polymorphism of β-amyrinsynthase and content of glycyrrhizic acid in Glycyrrhiza uralensis STUDIES ON THE CONSTITUENTS OF CYNANCHUM OFFICINALE (HEMSL.) TSTANG ET ZHENG Chemical constituents from Euphorbia tirucalli Chemical constituents in whole herb of Cardiospermum halicacabum (I) Impacting of polymorphism of β-amyrin synthase from Glycyrrhiza uralensis on its catalytic efficiency Chemical constituents from stem barks of Daphne giraldii Chemical constituents from stem barks of Daphne giraldii Antitumor constituents from seeds of Caesalpinia minax Studies on Chemical Constituents in Herba of Lysimachia davurica