Objective:To observe the effects of Jiangu granula on ultrastructure of neck of femur and the bone mineral density in ovariectomized rats,and to investigate its mechanism of action.Methods:Rats osteoporosis mode by ovary excision were randomly divided into Jiangu granula prevention group, Jiangu granula treating group,normal saline group and Gusongbao treating group.The animals were killed after 24 weeks of operation.Bone mineral density were measured and the ultrastructural of bone tissue of...