Immunoglobulins

Immunoglobulins

Any of several types of globulin proteins that function as antibodies.

Mentioned in: Protein Electrophoresis

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immunoglobulins (Ig) (antibodies) (im´ūnōglob´ūlinz),

serum pro-teins (g globulins) synthesized by plasma cells that act as antibodies and are important in the body's defense mechanisms against infection. See also antibody and allergen.

immunoglobulin, IgA,

n a type of immunoglobulin most commonly found in saliva, mucus, tears, urine, and other secretions.

immunoglobulin, IgD,

n a type of immunoglobulin that operates as antibodies. Trace amounts of IgD proteins are found in the blood serum and the plasma membranes of B lymphocytes.

immunoglobulin, IgE,

n a type of immunoglobulin that plays a role in regulating hypersensitivity reactions and reactions to parasitic infections.

immunoglobulin, IgG,

n a type of immunoglobulin that plays a role in secondary immune responses. It is unique in that it can pass through the placental barrier.

immunoglobulin, IgM,

n a type of immunoglobulin that reacts first to any given immune response.