6Fu Yujie, Zu Yuangang, Liu Wei, et al. Optimization of luteolin separation from pigeonpea [ Cajanus cajan ( L. ) MiUsp. ] leaves by macroporous resins [ J ]. Joural of Chromatograph A, 2006,1137(2) :145 - 152.
7Zhao Yu ,Chen Bo ,Yao Shouzhuo. Separation of 20(S) - protopanaxdiol type ginsenosides and 20 (S) - protopanaxtriol type ginsenosides with the help of macroporous resin adsorption and microwave assisted desorption [ J ]. Separationand Purification Technology,2007,52(3) :533 -538.
8John R K, John M D. Gastric cancer epidemiology and risk factors [ J ]. Journal of Clinical Epidemiology ,2003 ,56 ( 1 ) : 1 - 9.
