Definition of Gammaglobulin

Gammaglobulin – a solution of immunoglobulins collected from the plasma of donated blood or from donated plasma. The highest concentration is of immunoglobulin E (IgE). Health-care providers administer gammaglobulin by intramuscular or intravenous injection to provide rapid immune protection for exposure to infectious diseases such as hepatitis.

Though the protection is temporary, it helps prevent infection until the person’s immune system can produce the necessary antibodies. Gammaglobulin is the treatment of choice when there is widespread public exposure to infectious diseases, such as may occur in schools and daycare centers.

See also ANTIBODYANTIGENIMMUNITY.

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