what is the difference between immunoglobulin and antibody?

Answer 1

Immunoglobulin:

A protein produced by plasma cells and lymphocytes and characteristic of these types of cells. Immunoglobulins play an essential role in the body's immune system. They attach to foreign substances, such as bacteria, and assist in destroying them. Immunoglobulin is abbreviated Ig. The classes of immunoglobulins are termed immunoglobulin A (IgA), immunoglobulin G (IgG), immunoglobulin M (IgM), immunoglobulin D (IgD) and immunoglobulin E (IgE).

Antibody:

An immunoglobulin, a specialized immune protein, produced because of the introduction of an antigen into the body, and which possesses the remarkable ability to combine with the very antigen that triggered its production.

The production of antibodies is a major function of the immune system and is carried out by a type of white blood cell called a B cell (B lymphocyte). Antibodies can be triggered by and directed at foreign proteins, microorganisms, or toxins. Some antibodies are autoantibodies and home in against our own tissues.

The term "antibody" dates to 1901. Prior to that time, an "antibody" referred to any of a host of different substances that served as "bodies" (foot soldiers) in the fight against infection and its ill effects.

Answer 2

An antibody or immunoglobulin is a large Y-shaped glycoprotein belonging to the immunoglobulin superfamily that is used by the immune system to identify and neutralize foreign objects like bacteria and viruses. An antibody contains two sites called paratopes that recognize a specific target, which is called an antigen.
Immunoglobulins are a class. Antobody is specific to an antigen.

Answer 3

Immunoglobulin ( Ig), one of the the group of structurally related proteins ( gamma globulin's ) that acts as antibodies. Several class of Ig, with different functions are distinguished : IgA, IgD, IgE, IgC. They can be separated by " Immunoelectrophoresis ".

Antibodies are special kind of blood protein that is synthesized in lymphoid tissue in response to the presence of a particular " Antigen " and circulates in the plasma, to attack the antigen and render it harmless. The production of specific antibodies against antigens as diverse as invading bacteria, inhaled pollen grains, and foreign blood cells is the basis of both " immunity " and " Allergy ". Antibody formation is also responsible for tissue or organ rejection, following transplantation. Chemically, antibodies are proteins of the globulin type. They are classified according to their structure and function.