Antibodies:
Antibodies also called immunoglobulins or Ig’s, are Y-shaped proteins that circulate through the bloodstream and bind to specific antigens, thereby attacking microbes. The antibodies are transported through the blood and the lymph to the pathogen invasion site. The body contains millions of different B cells, each able to respond to one specific antigen.
Antigen:
Antigens are a foreign substances that when introduced into the body. It is capable of stimulating an immune response, specifically activating lymphocytes, which are the body’s infection-fighting whaite blood cells.
Types of Antibodies:
There are 5 classes of antibodies:
IgG, IgM, IgE, IgA, and IgD.