Thus, our analysis demonstrated that in a population of neuroblastoma cells, there is an inverse correlation between miR-124 expression and CDK6 expression in individual cells: cells with high levels of CDK6 had low or intermediate levels of miR-124 expression (Figure 1a, gate R1), whereas most of the cells with intermediate and high levels of miR-124 expressed low levels of CDK6 (Figure 1a, gate R3-R4). Here, CDK6 is linked to neuroblastoma.