Source BBC: A year on from gruelling stem cell treatment for her multiple sclerosis, BBC correspondent Caroline Wyatt reveals what effect the potentially life-changing "reboot" of her immune system has had on her life.
The results of an international trial show stem cell transplants can vastly improve the lives of some people with multiple sclerosis.
The gruelling treatment involves wiping out a patient's faulty immune system with drugs used to treat cancer - and then rebuilding it using stem cell transplants.
The BBC's Caroline Wyatt, who was deemed unsuitable for a trial in the UK, paid for a stem cell transplant in Mexico. Read her story here.