In the brain of every patient suffering from Parkinson's disease is a mystery - why do some cells die but others survive? Little is known about the illness but Dr Birgit Liss believes the answer will lie in the genetics of individual neurones.

Birgit is one of just a few scientists in the world who've mastered the techniques which she hopes will help to unlock the puzzle of Parkinson's and maybe one day help the thousands of sufferers.

Find out more about Birgit and what she does on her Interview page or try exploring the C.V., Lifestyle and Science sections.

Content last updated: 01/08/2006