| Future
directions/problems |
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| • | Many factors that
mediate synaptic |
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| differentiation
in the CNS are not |
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| understood |
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| • | Target
specificity |
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| • | Regeneration
after injury is very low in |
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| CNS compared to
PNS resulting in |
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| paralysis |
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| • | Strategies to
improve re-growth of axons |
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| and specific
synapse formation |
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