Scientists in multiple sclerosis cure 'breakthrough'
30 December 2011 Last updated at 08:58 GMT
From new drug therapies for cancer to artificial corneas to a vaccine for malaria, 2011 has been a year of remarkable medical breakthroughs.
One of the most significant breakthroughs came from research scientists in Edinburgh and Cambridge who have discovered what they say could eventually be a cure for multiple sclerosis.
Graham Satchell reports.