Why you interchange the term Antibody and Immunogobulin?

Antibodies and immunoglobulins are often used interchangeably because they refer to the same type of molecule. Immunoglobulins are a class of proteins that function as antibodies. Antibodies are proteins that are produced by the immune system in response to the presence of foreign substances, such as bacteria or viruses. They bind to the foreign substance and help to neutralize it, or they mark the foreign substance for destruction by other immune cells.

Immunoglobulins are produced by B cells, which are a type of white blood cell. There are five different classes of immunoglobulins: IgG, IgA, IgM, IgD, and IgE. Each class of immunoglobulin has a different function. For example, IgG is the most common type of immunoglobulin and it is found in blood and other body fluids. IgA is found in saliva, tears, and breast milk. IgM is found in blood and is the first type of immunoglobulin to be produced in response to an infection. IgD is found on the surface of B cells and helps to activate them. IgE is found on the surface of mast cells and basophils and is involved in allergic reactions.

Antibodies are essential for the immune system to function properly. They help to protect the body from infection and disease.