The Immune System - How It Works

The Immune System - How It Works When a foreign invader enters the body, the immune system is alerted, immune system cells are activated, and chemicals are produced. Our immune system protects us when it works properly. READ NOW  READ THESE NEXT What Is an Autoimmune Disease? MORE What Role Do Cytokines Play in the Body? MORE What Is a Monoclonal Antibody? MORE AN ABOUT.COM BRAND You are receiving this newsletter because you subscribed to the Real Life with Arthritis newsletter. If you wish to unsubscribe, please click here 1500 Broadway, 6th Floor, New York, NY, 10036 © 2016 Verywell.com - All rights reserved. Privacy Policy.