Simultaneous determination of five effective components in Rhizoma Chuanxiong by RP-HPLC Pharmacokinetic study on bufadienolides of bufalin, cinobufagin, and resibufogenin from Bufonis Venenum in rats in vivo Determination of aristolochic acid A in Guanxinsuhe preparations by RP-HPLC Quantitative analysis of saikosaponin a, c, d in different species of Radix Bupleuri by HPLC Studies on correlativity between in vivo and in vitro release of XIANGHE SUPPOSITORY Simultaneous determination for contents of naringin, hesperidin, and neohesperidin in flower of Citrus changshan-huyou by RP-HPLC Determination of jatrorrhizine,palmatine and berberine in Cortex phellodendron by HPLC Research progress on determination methods of active constituents from Oldenlandia diffusa and its preparations Variation analysis on triterpene compounds in hawthorn from different regions Tyrosinase inhibition of Potentilla bifurca Determination of asperosaponin VI, psoralen, and angelicin in Xianling Gubao Capsule by HPLC