2Su W, Xu HF, Huang H. In vitro anti-influenza a H1N1 effect of extract of Bupleuri Radix[ J ] . Immunopharmacology and Immunotoxicology, 2011,33 ( 3 ) : 433-437.
3Raphael TJ, Kuttan G. Effect of naturally occurring trriterpenoids glyeyrrhizic acid, urlsolie acid and nomilin on the immune system[ J ] .Phvtomedicine, 2003,10 ( 6/7 ): 483-489.