Fig. 2.

The assessed OPN mRNA expression levels in tumor for the different clinicopathological variables in the patients with malignant bone cancers The OPN mRNA expression level was evaluated in different types of malignant bone tumors including osteosarcoma (a), Ewing sarcoma(b), and chondrosarcoma (c) for the different clinicopathological variables (chemotherapy status, tumor grade, tumor metastasis, and recurrent) in the patients. The Statistical differences between groups are shown by P values.