may be keeping the answer to that queston close to their Substantia Nigra
until the phase two trials advance beyond belief from the 2003 trials and confirms the Neurologix program of 2008/9 as a stiunning success.
Remember, the 2003 trials where the patient only had one side of the brain given the treatment. and that was a huge success for brilliant scientists Dr Mat During and Dr Michael Klappitt. Click
http://www.webmd.com/parkinsons-dise...-seems-to-work