By STEPHEN ADAMS FOR THE MAIL ON SUNDAY PUBLISHED: 20:02 EDT, 2 October 2021 | UPDATED: 20:05 EDT, 2 October 2021 Scientists believe a revolutionary new drug that allows nerve cells to mend themselves could transform the treatment of Alzheimer’s. Unlike current treatments for the neurological condition, the drug, codenamed NVG-291, works by removing a natural barrier in the body...