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Antibodies are proteins made by B cells of the immune system in response to an immune challenge. They can be defined as immunoglobulins (Ig) capable of interacting specifically with the antigen that caused their formation.

Properties:

• IgA is found in the mucous membranes of the gastrointestinal and respiratory tracts. It is located in mucus secretions, saliva, tears, and the colostrum.
• It constitutes 13% of total antibody content found in the serum. There are two subclasses of the IgA antibody – IgA1 and IgA2.
• The IgA1 antibody is the most prevalent and is also called secretory immunoglobulin or sIgA, and is most commonly found in secretions in high quantities.

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Antibodies are also known as immunoglobulins, are Y-shaped proteins that are produced by the immune system to help stop intrudes 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.

Antibodies have two fundamental characteristics: Specificity the ability to bind to epitopes. One B-cel will make only one specificity of antibodies. That is they will bind to one epitope.

Dear Student,

Antibodies are the proteins made by B cells of the immune system in response to an immune challenge. These have two fundamental characteristics, specially for the ability to bind to epitopes. One B-cell will make only one speciality of antibodies. There are five types of antibodies. These are, IgG, IgM, IgA, IgE and IgD.

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Hey

Hopeyou are doing well

Antibodies are proteins made by B cells of the immune system in response to an immune challenge. They can be defined asimmunoglobulins(Ig) capable of interacting specifically with theantigenthat caused their formation.

Antibodieshave two fundamentalcharacteristics: Specificity the ability to bind to epitopes. One B-cell will make only one specificity ofantibodies. That is, they will bind to one epitope.

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