从柴胡的根中分离到具有免疫调节作用的柴胡皂甙a、d、f、皂甙粗提混合物（CSM）和水层组分（HLC）。将这些成分分别按1～10mg／kg剂量腹腔注射给予每组40只的4周龄BALB／c系小鼠，隔天一次，持续4周，每周处死10只测定免疫功能。结果发现，第1周中胸腺重量／体重有增加，此后? The saikosaponin a, d, f, saponin crude extract mixture (CSM) and aqueous layer component (HLC) with immunomodulatory effects were isolated from the roots of Radix Bupleuri. These components were administered intraperitoneally at doses of 1 to 10 mg/kg, respectively, to 40 4-week-old BALB/c mice of each group, once every other day for 4 weeks, and 10 mice were sacrificed each week to measure immune function. As a result, it was found that the weight/body weight of the thymus increased during the first week, and thereafter?