immunoglobulin (Antibody)

An antibody, also known as an immunoglobulin. 

Immunoglobulin is a large, Y-shaped protein that act as protective agent for an individual against pathogenic organisms.

Chemically antibodies are globulins and are called immunoglobulins (Igs), which constitute 20-25% of total serum proteins.

Immunoglobulins Classes

5 main classes of immunoglobulins;

1. Immunoglobulins G (Ig G)

Or Gamma globulin heavy chain

2. Immunoglobulin A (Ig A)

Or Alpha globulin heavy chain

3. Immunoglobulin M (Ig M)

Or Mu globulin heavy chain

4. Immunoglobulin D (Ig D)

Or Delta globulin heavy chain

5. Immunoglobulin E (Ig E)

Or Epsilon globulin heavy chain