Research by scientists at Queen's University in Belfast could revolutionise life for people with multiple sclerosis (MS).
The study of how the damaged brain repairs itself is being hailed as landmark work.
In Northern Ireland, 4,500 people have MS. Across the world, 2.3 million live with the condition.
MS causes the body's own immune system to attack the lining of nerves in the brain and spinal cord.
The study, led by Dr Yvonne Dombrowski and Dr Denise Fitzgerald at the Wellcome-Wolfson Institute for Experimental Medicine, focused on specific cells from the immune system which play a key role in repairing the brain. Read on.