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Immune System

What is the Immune System

Self and Nonself

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Immune Cells and Their Products

Immune Response

Immunity: Natural and Acquired

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Immune System

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Rituximab targets B cells by binding specifically to CD20 on the cell surface
Credit: NIAID

Last Updated July 02, 2010

Last Reviewed July 02, 2010

U.S. Department of Health and Human Services Text