Dear Carole: If you lived in the DC area, I'd discuss this with you by phone. I worked as a research chemist at the FDA, and I DO NOT understand a lot of the biomedical/biochemical jargon.... but, my philosophy is that I cannot see the whole forest; I am just interested in one tree (my wife) and see to it that while a cure is being worked on, I can make my wife's life more bearable and more comfortable. Of course, I seek to understand current available therapies, but if I were to read all the relevant journals (there are so many of them) I would not have time to write you this little note of affection. I still have other interests in my life (USHMM, PBS, Animal shelter, genealogy, bridge, women[mmmh]), but this damn PD has taken precedence. And I am confident that Stem Cell, and/or gene therapy and/or transplant research WILL come through. Fondly, Michel Margosis 'Carpe Diem'