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Arthritis Choose a Subcategory Arthritis Basics Arthritis Treatment Living with Arthritis Current Topics in Arthritis Related Topics - Pain - Fitness - Healthy Aging Featured Video What Causes Rheumatoid Arthritis? Video Transcript Rheumatoid arthritis is a common disease of the immune system. Learn what factors can contribute to the progression of this disease. Video of the Week Cancer 101 Cancer basics. A look at the causes of cancer and treatment options. Advertisement Find an Acupuncturist, Chiropractor, and more... Advertisement HealthVideo.com © 2008 NBC Digital Health Network, Inc. All Rights Reserved Privacy Policy - Disclaimer - Editorial Policy We subscribe to the HONcode principles. Verify here

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