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antibody

An antibody is a protein made by the body that latches onto foreign bacteria and viruses to make them ineffective. Each antibody is designed to target a particular opponent.

A powerful part of the body’s immune system, an antibody is produced when the body senses an invader — called an antigen that it doesn’t think should be there. The body then sends out the antibody to neutralize it. Don’t think of an antibody as being anti or “against” your body; think of the body in the word antibody as the antigen, or foreign body that is being fought. Known antibodies have been especially useful in the creation of vaccines.

DEFINITIONS OF: antibody

n any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response

Types:: show 22 types...; hide 22 types...; autoantibody
an antibody acting against tissues of the organism that produces it; precipitin
an antibody that causes precipitation when it unites with its antigen; ABO antibodies
blood type antibodies; Rh antibody
rhesus factor antibody; antitoxin
an antibody that can neutralize a specific toxin; agglutinin
an antibody that causes agglutination of a specific antigen; Forssman antibody, heterophil antibody, heterophile antibody
an antibody found in the blood of someone suffering from infectious mononucleosis; alloantibody, isoantibody
an antibody that occurs naturally against foreign tissues from a person of the same species; monoclonal, monoclonal antibody
any of a class of antibodies produced in the laboratory by a single clone of cells or a cell line and consisting of identical antibody molecules; opsonin
an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes; Ig, immune gamma globulin, immune globulin, immune serum globulin, immunoglobulin
a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response; rheumatoid factor
autoantibody that is usually present in the serum of people with rheumatoid arthritis; antivenene, antivenin
an antitoxin that counteracts the effects of venom from the bite of a snake or insect or other animal; tetanus antitoxin
antitoxin given for short-term immunization against tetanus in cases of possible exposure to the tetanus bacillus; isoagglutinin
an antibody produced by one individual that causes agglutination of red blood cells in other individuals of the same species; Remicade, infliximab
a monoclonal antibody (trade name Remicade) used to treat Crohn's disease and rheumatoid arthritis; administered by infusion; use and dosage must be determined by a physician; IgA, immunoglobulin A
one of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts; IgD, immunoglobulin D
one of the five major classes of immunoglobulins; present in blood serum in small amounts; IgE, immunoglobulin E
one of the five major classes of immunoglobulins; present primarily in the skin and mucous membranes; IgG, immunoglobulin G
one of the five major classes of immunoglobulins; the main antibody defense against bacteria; IgM, immunoglobulin M
one of the five major classes of immunoglobulins; involved in fighting blood infections and in triggering production of immunoglobulin G; tetanus immune globulin, tetanus immunoglobulin
sterile solution of globulins derived from the blood plasma of a person who has been immunized for tetanus; provides short-term immunization against tetanus in cases of possible exposure to the tetanus bacillus

Type of:: protein
any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes

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