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Additional Information From NIAID

Look up definitions in a glossary to help you understand the immune system.
The Edge of Discovery: A Portrait of NIAID (PDF)
Immunology: Curious About B-Cell Activation
Primitive Marine Creature Holds Clues to Immune System History
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External Resources

The Immune System from the National Cancer Institute

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Immune System

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Understanding the Good Bacteria in Our Skin

Scientists at three NIH institutes collaborate to study the role of "good" skin bacteria in health and disease.

Last Updated September 18, 2012

Last Reviewed September 18, 2012