7LIU J. Pharmacology of oleanolic acid and ursolic acid[ J]. J Ethno- pharmacol, 1995,49 ( 2 ) :57 - 68.
8LIU J. Oleanolic acid and ursolie acid: research perspectives [ J]. J Ethnopharmacol, 2005, 100(1/2) : 92 -94.
9LEE S U, PARK S J, KWAK H B, et al. Anabolic activity of ursol- ic acid in bone: Stimulating osteoblast differentiation in vitro and in- ducing new bone formation in v/vo [ J]. Rharmacol Res, 2008, 58 (5/6) : 290 - 296.
10BIAN Q, LIU S F, HUANG J H, et al. Oleanolic acid exerts an os- teoprotective effect in ovariectomy- induced osteoporotic rats and stimulates the osteoblastic differentiation of bone mesenchymal stem ceils in vitro [J]. Menopause, 2012, 19(2) : 225 -233.
