Down-regulated LINC00899 attenuates spinal ependymoma cell migration. a, the migration of spinal ependymoma cells transfected with LINC00899 vector, siRNA-LINC00899, siRNA-RBL2 and siRNA-LINC00899 + siRNA-RBL2 (× 100); b, the migration distance of cells transfected with LINC00899 vector, siRNA-LINC00899, siRNA-RBL2 and siRNA-LINC00899 + siRNA-RBL2; *, p < 0.05 vs. the blank and NC groups.