WOW, Bob!
Your sound-off about Amgen makes me want to read your online book/blog! That's a cool marketing strategy. lol
There is a reliable account in detail about the WHOLE GDNF story on the Parkinson Pipeline Project website:
http://pdpipeline.org/advocacy/gdnf_table.htm
Much of this detailed account oof the story of GDNF is the result ofo the hard work (and librarian skills) or Linda Herman, who posts here. She or any of PPP volunteers would be happy to discuss any of it with anyone (after we screen you lol)
The story is far from complete.
Peggy