Were are antibodies found

Antibodies (also called immunoglobulins) are specialized proteins that travel through the bloodstream and are found in bodily fluids. They are utilized by the immune system to identify and defend against foreign intruders to the body.

Antibodies are proteins found in body fluids, such as blood. White blood cells activate the plasma cells, which produce the IgM antibody. IgE antibodies are found in the lungs. IgE antibodies are often present in elevated amounts in the blood of individuals with allergies. IgA antibodies are located in the eyes and nose.