Dr. GG deFiebre of SRNA was joined by Dr. Benjamin Greenberg for an “Ask the Expert” podcast episode titled, “Immunology of Rare Neuroimmune Disorders Part 3.” Dr. Greenberg began by explaining repair versus recovery in the spinal cord, the brain, and the optic nerves. He discussed how the body naturally remakes myelin and current research on astrocytic scars. He also summarized how an MRI may not correlate with how much function returns. Finally, Dr. Greenberg provided information on ongoing research on repair and stem cells, as well as the risks of stem cell clinics.