Greetings: My name is Dr. Jeffrey Tosk. I am a research scientist studying PD and am new to this list. I work out of La Sierra University in Riverside, California where I am Associate Professor of Biology and Directror of the Parkinson's Research Center. My research deals with the role of the brain pigment neuromelanin in PD. I also employ magnetic resonance spectroscopy for studying the brain chemistry of patients with PD. My associates and I are investigating the potential role of several growth factors for the treatment of PD. I am delighted to see so much Parkinson's related activity on the net. Thanks. Jeffrey M. Tosk, Ph.D. ( [log in to unmask]) Ph. 909-785-2216