Slideshows Images Quizzes

Copyright © 2018 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. See additional information.

Definition of Antigen

Antigen: A substance that the immune system perceives as being foreign or dangerous. The body combats an antigen with the production of an antibody.

SLIDESHOW

Could I Be Allergic? Discover Your Allergy Triggers See Slideshow

From WebMD Logo

CONTINUE SCROLLING FOR RELATED SLIDESHOW

Health Solutions From Our Sponsors