Results of qRT-PCR and Western blot assays (Figure 2(b), Table 8) showed that BMPR2 expression was significantly higher in osteosarcoma cells in inhibitor-miR-200a group than that in inhibitor-NC group; BMPR2 expression was significantly lower in osteosarcoma cells in mimic-miR-200a group than in those in mimic-NC group (P < 0.05). This evidence concerns the gene BMPR2 and osteosarcoma.