The exciting news:  CNS neurons can sprout or grow.
Challenges:
*Overcome the “bad” glial environment:
   - combat glial scars, inhibitory extracellular matrix
   - add blockers of myelin
   - repopulate with neurons and “good” glia
*Help axons regrow:
     add neurotrophins (increase cAMP levels to prime neurons
to ignore myelin-inhibitors).
     re-express ”youth" proteins - GAP-43

*Induce reformation of synapses (least understood step);
   how do normal synapses form?