antibody

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antibody
When bacteria enter a flesh wound, a B cell releases antibodies, which attach to the bacteria and direct them toward a macrophage for destruction.

an·ti·bod·y

 (ăn′tĭ-bŏd′ē)
n. pl. an·ti·bod·ies
Any of numerous Y-shaped glycoproteins that bind to specific antigens and either neutralize them or cause them to be destroyed by other elements of the immune system, such as phagocytes, cytotoxic cells, or complement proteins. Antibodies occur as antigen receptors on the surface of B cells and are secreted as soluble proteins when the B cells mature into plasma cells. Antibodies are also called "immunoglobulins."

[Translation of German Antikörper : anti-, antagonistic (from Latin anti-, anti-) + Körper, body.]

antibody

(ˈæntɪˌbɒdɪ)
n, pl -bodies
(Biochemistry) any of various proteins produced in the blood in response to the presence of an antigen. By becoming attached to antigens on infectious organisms antibodies can render them harmless or cause them to be destroyed. See also immunoglobulin

an•ti•bod•y

(ˈæn tɪˌbɒd i)

n., pl. -bod•ies.
1. any of numerous protein molecules produced by B cells as a primary immune defense, each kind having a uniquely shaped site that combines with a foreign antigen, as of a virus or bacterium, and disables it.
2. antibodies of a particular type collectively. Also called immunoglobulin.
[1895–1900; translation of German Antikörper]
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an·ti·bod·y

(ăn′tĭ-bŏd′ē)
A protein produced in the blood or tissues in response to the presence of a specific foreign antigen. Antibodies provide immunity against certain microorganisms and toxins by binding with them and often by deactivating them. Also called immunoglobulin.
Did You Know? Antibodies are complex, Y-shaped protein molecules that guard our bodies against diseases. The immune system's B lymphocytes, or B cells, develop into plasma cells, which can produce a huge variety of antibodies, each one capable of grabbing an invading molecule at the top ends of the Y. The molecules that antibodies recognize can be quite specific—they might exist only on a particular bacterium or virus. When that bacterium or virus enters the body, the antibodies quickly recognize its molecules, as if a sentry recognized an enemy soldier from his uniform. Once the invader is caught, the antibodies may make it inactive or lead it to cells that can destroy it. High numbers of a particular antibody may persist for months after an invasion. The numbers may then get quite small, but the experienced B cells can quickly make more of that specific antibody if necessary. Vaccines work by training B cells to do just that.

antibody

A protein released by blood cells to destroy invading foreign organisms or substances.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antibody - 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
active site - the part of an enzyme or antibody where the chemical reaction occurs
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; "a diet high in protein"
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
Translations
антитяло
protilátka
antistof
antikorpoantipartiklo
vasta-aine
antitijelo
ellenanyag
抗体
항체
antideeltjeantilichaamantistof
anticorp
antikropp
แอนติบอดี
kháng thể

antibody

[ˈæntɪˌbɒdɪ] Nanticuerpo m

antibody

[ˈæntibɒdi] nanticorps manticancer drug nmédicaments mpl anticancéreux

antibody

[ˈæntɪˌbɒdɪ] nanticorpo

antibody

جِسْم مُضادّ للحيوِيّات protilátka antistof Antikörper αντίσωμα anticuerpo vasta-aine anticorps antitijelo anticorpo 抗体 항체 antistof antistoff przeciwciało anticorpo антитело antikropp แอนติบอดี antikor kháng thể 抗体

an·ti·bod·y

n. anticuerpo, sustancia de proteína que actúa como respuesta a la presencia de antígenos;
___formationformación de ___-s;
cross-reacting ______ de reacción cruzada;
monoclonal ______ monoclónico, derivado de células de hibridoma.

antibody

n (pl -dies) anticuerpo; antibodies against your own sperm..anticuerpos contra sus propios espermatozoides; antimitochondrial — anticuerpo antimitocondrial; antinuclear — (ANA) anticuerpo antinuclear (AAN); antiphospholipid — anticuerpo antifosfolípido
References in periodicals archive ?
The direct fluorescent antibody test for detection of Brucella abortus in bovine abortion material.
Comparison of Chemicon SimulFluor direct fluorescent antibody staining with cell culture and shell vial direct immunoperoxidase staining for detection of herpes simplex virus and with cytospin direct immunofluorescence staining for detection of varicella-zoster virus.
Comparison of the rapid immunodiagnostic test (RIDT) to the direct fluorescent antibody test (DFAT, reference method) and murine neuroblastoma cell culture (MN) by species tested.
(11.) CDC--Rabies Direct Fluorescent Antibody Test.
The long incubation time for culture and the low specificity of direct fluorescent antibody have driven the detection method in use to DNA amplification method for its increased sensitivity and quick turnaround time.
A case of pertussis was defined as an illness that was either: a) confirmed by positive culture and/or direct fluorescent antibody testing (FA) for Bordetella pertussis, b) diagnosed as pertussis by a physician, or c) characterized by a cough lasting 14 consecutive days or more that had either inspiratory whoop, post-tussive vomiting, or a household member with laboratory confirmed or clinically diagnosed pertussis.
[UKPRwire, Fri Aug 02 2019] Direct fluorescent antibody test kits detects the existence of an antigen (particularly a protein on the surface of a bacteria, virus or any other microbe).
Summary: Latin America and Middle East & Africa are projected to exhibit decent growth in direct fluorescent antibody test kits market, due to inadequate healthcare facilities and lack of awareness.
Polymerase chain reaction and direct fluorescent antibody tests were inconclusive because of the deteriorated condition of the carcass.
To help with initial diagnosis, many physicians utilized indirect or direct fluorescent antibody (IFA or DFA.
Biopsy can be helpful, but it is no longer the preferred method to confirm diagnosis since the advent of more rapid methods such as polymerase chain reaction assays, direct fluorescent antibody tests, and viral cultures.
Electron microscopy is not widely available and PCR can take several days, so often it is helpful to do direct fluorescent antibody testing while PCR results are pending.

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