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About the Cover

Cover Figure


COVER Electron micrograph of a cross section of a neuronal axon wrapped tightly by myelin. The thickness of myelin, a spiral extension of Schwann cell membrane, strictly depends on the axonal diameter. Transgenic mice that overexpress the growth factor neuregulin-1 on their axons cause the Schwann cell to produce excess myelin. See page 700. [Image: Eva Niksch]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)