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MYELINATION

Calcium control of myelin sheath growth

New studies provide compelling evidence that the number and length of myelin sheaths generated by oligodendrocytes in the CNS are controlled by local calcium levels, linking axonal activity to individual myelin sheath formation.

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The author declares no competing financial interests.

Correspondence to Robert H. Miller.

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Fig. 1: An individual oligodendrocyte can generate multiple myelin sheaths that wrap different axons.