Describe the structure and basic functions of the five major typesof immunoglobulins.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
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Describe the structure and basic functions of the five major types
of immunoglobulins.

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Immunoglobulins or antibodies are the molecules that function in the defense system of the body. Immunoglobulins are proteins, more specifically glycoproteins, that are secreted by B lymphocytes. These immunoglobulins are specific in nature meaning they bind only to a particular type of antigen such as bacteria and results in their destruction. The immunoglobulin molecule is made up of four polypeptide chains that are two heavy chains and two light chains. A basic structure of an immunoglobulin molecule is as follows:

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