(biochemistry, immunology) Any of the glycoproteins in blood serum that respond to invasion by foreign antigens and that protect the host by removing pathogens; an antibody.

plural of immunoglobulin

(immunology) An antibody that plays a crucial role in the immune function of mucous membranes.

(immunology) A class of antibody (or immunoglobulin "isotype") found in mammals.

(immunology) an antibody isotype that makes up about 1% of proteins in the plasma membranes of immature B lymphocytes

(immunology) the most common type of antibody found in human blood circulation

(immunology) one of several isotypes of antibodies produced by vertebrates

(pathology) The presence of immunoglobulin in the blood

plural of immunoglobulinemia