Learn what antibodies are, how they help protect our bodies from intruders like viruses and bacteria, and how autoimmune diseases can arise when antibodies get confused.
This video is part of the Bio-Dictionary for "The Explorer's Guide to Biology" (XBio for short), which is a bold re-imagining of the biology textbook for the 21st century. Visit explorebiology.org for free content that focuses on stories of scientific discovery.