1. Dammarenediol II is biologically active tetracyclic triterpenoid, which is basic compound of ginsenoside saponin.
1. Byakangelicin is an antineoplastic agent.
2. Byakangelicin has inhibitory effect on and presence of sulphydryl group in pregnant mare's serum gonadotropin.
3. Byakangelicin markedly induces the expression of CYP3A4 both at the mRNA level and the protein level but do not affect expression of human pregnane X receptor.