Any of a large variety of immunoglobulins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response.
substance in blood that neutralizes specific harmful substances.
A protein molecule produced in the blood by B-lymphocytes (see lymphocyte). Antibodies bind specific foreign agents that invade the body, tagging them for destruction by phagocytes (white blood cells that engulf and destroy invaders) or activating a chemical system that renders them harmless. Each antibody is specific for a particular antigen (the molecular pattern unique to a foreign substance).
Antibodies were discovered 1890 by German physician Emil von Behring and Japanese bacteriologist Shibasaburo Kitasoto.
Any of a large number of proteins of high molecular weight that are produced normally by specialized B cells after stimulation by an antigen and act specifically against the antigen in an immune response, that are produced abnormally by some cancer cells, and that typically consist of four subunits including two heavy chains and two light chains — called also immunoglobulin. + prikaži više