And Pulsatilla chinenensis Bunge Regel, Cucurita moschata Ouch, Quisgualis indical, Areca actechata Duch and Sophora flavescens Aic have no effect to Blastocystis hominis.

• 低浓度胡黄连药物作用虫体后均转变成包囊，而白头翁、南瓜子、使君子、槟榔、苦参对人芽囊原虫均无作用。