Antibody

Also Known as: Ig, Immunoglobuline,

Antibodies, are Y-shaped proteins that are produced by the immune system to help stop intruders from harming the body. When an intruder enters the body, the immune system springs into action. These invaders, which are called antigens, can be viruses, bacteria, or other chemicals.

Types of Antigens:

• IgA
• IgD
• IgE
• IgG
• IgM