Antibodies are a part of our immune system that helps identify and fight off foreign substances such as viruses and bacteria. The body creates antibodies to fight off “outside” foreign invaders. However, sometimes a person’s immune system may produce what is known as an autoimmune antibody response. When this happens, the antibodies target the person’s own immune system and can cause an autoimmune disorder. Antibodies are needed by medical research and diagnostic companies in the scientific and medical industries in order for them to diagnose, treat and prevent disease.