The inhibiting effect of different dose groups of water-decocted liquid of Zanthoxylum nitidum DC on UDS induced by Cdso4 could be improved by the increasing dose, the strongest effect appeared in the 40 times human dose group.

• 两面针水煎液在10 X、20X、 40X 人剂量组时对由Cdso4诱导的UDS有抑制作用，且随剂量的增大抑制作用逐渐增强。