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Cell Mol Life Sci. 1999 Aug 30;55(11):1365-76.

Axon guidance at the central nervous system midline.

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Molecular Neurobiology Group, Guy's Hospital Campus, King's College, London.


A key feature of the central nervous system of most higher organisms is their bilateral symmetry about the midline. The specialised cells that lie at the midline have an essential role in regulating the axon guidance decisions of both neurons that project axons across the midline and those that project on one side. The midline cells produce both attractive and repellent short- and long-range signals to guide axonal growth. The axons themselves express specific receptors that can be dynamically regulated in response to midline-derived signals. In this way, axons extend toward or away from the midline and those that do cross change their behaviour to respond to longitudinal signals on the contralateral side.

[Indexed for MEDLINE]

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