American Society for Neural Transplantation and Repair (ASNTR)
http://www.asntr.org/
A society composed of basic and clinical neuroscientists who utilize transplantation and related technologies to better understand the way the nervous system functions and establish new procedures for its repair in response to trauma or neurodegenerative disease.

National Institute of Neurological Disorders and Stroke (NINDS)
http://www.ninds.nih.gov/
A federal agency that focuses primarily on conducting and funding research into neurological conditions, including Parkinson's. News and information on treatment, government policies, and clinical trials are also available.

National Parkinson Foundation
http://www.parkinson.org/
Offers extensive treatment information and news about Parkinson's for patients and caregivers.

Parkinson's Disease Foundation (PDF)
http://www.pdf.org/
Promotes and helps fund research into the causes of and cure for Parkinson's and for better treatment of symptoms.

Parkinson's Research: The Organized Genetics Initiative (PROGENI)
http://medgen.iupui.edu/research/parkinson/
A research effort involving universities and medical centers focusing on genetic and other risk factors that may be linked to Parkinson's. The initiative also sponsors research studies and is often looking for
participants.

The Parkinson Alliance
http://www.parkinsonalliance.net/home.html
Raises funds, largely through partnerships and matching fund affiliations, for research into the causes of and potential cures for Parkinson's.

The Parkinson's and Movement Disorders Institute
http://www.pmdi.org/
A nonprofit based in southern California that is dedicated to a full spectrum of patient care and research in the areas of Parkinson's disease and movement disorders, from medical treatment to surgical approaches.

The Parkinson's Institute
http://www.parkinsonsinstitute.org/
A nonprofit that focuses on news and information about patient care and research activities in the neurological specialty area of movement disorders. Two members of the Foundation's Scientific Advisory Board, J. William Langston, MD, and Caroline M. Tanner, MD, PhD, are affiliated with
the institute.