In PNS nerve fiber regeneration, how is a growing axon directed to its original destination?
A. The axon grows a collateral that is directed by growth factors secreted by the postsynaptic neuron.
B. The axonal terminals grow towards the neurosoma until the two severed fragments are reunited.
C. It grows within a regeneration tube.
D. Injured Schwann cells produce a trail of prostaglandins to the original destination.
Answer: C
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