(C) Luc-reporters containing SOX9 and SOX10 bound CRMs around the oligodendrocyte specific genes Plekhb1 and Mid2 were activated in an additive manner by SOX9 and SOX10. No activation could be detected with SOX11. (D) Luc-reporters containing SOX3 and SOX11 bound CRMs of the neuronal genes Tubb3 and Lhx2, which are sequentially bound by SOX3 and SOX11, could be activated by SOX11 and efficiently repressed by SOX3. No activation could be detected with SOX10 