Figure 1. Notch-1 shRNA transfection diminishes viability and stimulates apoptosis. (A) Viability was evaluated by MTT assay. The MTT results demonstrated that the reduction in Notch-1 alleviated the viability of OS cells. *P < 0.05 vs control shRNA. (B) Apoptosis was examined by flow cytometry. Inhibition of Notch-1 led to increased apoptosis. (C) Transwell assays showed that Notch-1 shRNA treatment resulted in invasion retardation.