Multiple axons and actions with PSD-95

Nitric oxide gets neurons together. And it seems to do it backward. Work by Nikonenko et al. suggests that a protein called PSD-95 prompts nitric oxide release from postsynaptic dendritic spines, prompting nearby presynaptic axons to lock on, and develop new synapses. The study will appear in the December 15, 2008 issue of The Journal of Cell Biology (JCB).

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