Immunoglobulin E

Immunoglobulin E is a form of immunoglobulin antibody involved in the immune system's response to parasites and cancer. However, it also plays a role in allergies, particularly those that cause asthma. It's the least common of the immunoglobulin types, making up less than ½ of 1% of the body's immunoglobulin. 
An excess of immunoglobulin E is a key finding in hyper IgE syndrome. 
Immunoglobulin E at Wikipedia
Category:Immunology