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Episode 1

Episode number: 1

Overview: In this moving first episode, cameras follow Professor Gill performing surgery on all the volunteers to implant the device he has designed that enables delivery of GDNF to a deep part of the brain. The device comprises four catheters placed in the putamen (a part of the brain key in Parkinson's) that link to a port embedded in the side of the skull through which GDNF can be infused monthly.

Episode 2

Episode number: 2

Overview: The results are revealed of a six-year medical trial into a new treatment for Parkinson's. Can it give hope to ten million Parkinson's sufferers worldwide?