Objective:To study the correlation of inhibitor of apoptosis protein Survivin and osteosarcoma stage,histopathology.Methods:To select 67 cases with osteosarcoma and 21 cases with benign osteochondroma in the same period,using immunohistochemical SP method to detect inhibitor of apoptosis protein Survivin expression,and analyze the relation of Survivin expression and the surgical stage,histological type( WHO bone tumor classification criteria)and 3-year survival rate.Results:In 67 cases with osteosarcoma,the...