Fig. 1

Extrinsic and intrinsic factors that affect neuroregeneration in the central and peripheral nervous systems. PTEN. Phosphatase and tensin homolog; SOCS3. Suppressor of cytokine signaling 3; NGF. Nerve growth factor; MAG. Myelin-associated glycoprotein; Omgp. Oligodendrocyte.myelin glycoprotein; CSPG. Chondroitin sulfate proteoglycans; KSPG. Keratin sulfate proteoglycans