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Key processes of axon guidance regulated by miRNAs. During axon pathfinding toward a target, miRNAs regulate (A) the long-range guidance of axons by acting within projection neurons and/or guidepost cells located along permissive corridors or at the midline, (B) the fasciculation of axons in a given tract, and (C) the restriction of the axonal targeting area. The components of the miRNA pathway involved in each process are specified under each scheme.
