title: Response to letter to editor from Dr Walshe.
authors.affiliation: Scottish Senior Research Fellow and Honorary Consultant Neurologist, Centre for Regenerative Medicine, University of Edinburgh, 5, Little France Drive, Edinburgh EH16 4UU anna.williams@ed.ac.uk.
authors.forename: A
authors.initials: A
authors.lastname: Williams
mesh_terms: D002490:Central Nervous System / Q000502:physiology*; D006801:Humans; D009416:Nerve Regeneration / Q000502:physiology*