Figure 4: Schematic diagram of NG2 cell division. (a) An NG2 cell divides, with one of the resulting daughter cells keeping the functional synapse and the other loses synaptic contact with the neuron. (b) An NG2 cell maintains synaptic contacts and passes these onto the two progeny cells. (c) NG2 cells lose synaptic input from neurons and differentiate into mature oligodendrocytes, enwrapping axons to form myelin sheaths.