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Antibody - Wikipedia
The antibody isotype of a B cell changes during cell development and activation. Immature B cells, which have never been exposed to an antigen, express only the IgM isotype in a cell surface bound form.
antibody | Definition, Structure, Function, & Types ...
Antibody: Antibody, a protective protein produced by the immune system in response to the presence of a foreign substance, called an antigen. Antibodies recognize and latch onto antigens in order to remove them from the body. Learn more about the function and structure of antibodies in this article.
Antibody: MedlinePlus Medical Encyclopedia
An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (bacteria, fungi, parasites, and viruses) and chemicals.
Antibody | definition of Antibody by Medical dictionary
antibody [an´tĭ-bod″e] an immunoglobulin molecule having a specific amino acid sequence that gives each antibody the ability to adhere to and interact only with the antigen that induced its synthesis. This antigen-specific property of the antibody is the basis of the antigen-antibody reaction that is essential to an immune response. The antigen ...
Antibody | Definition of Antibody by Merriam-Webster
: 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 ...
Antibody | Define Antibody at Dictionary.com
Antibody definition, any of numerous Y-shaped protein molecules produced by B cells as a primary immune defense, each molecule and its clones having a unique binding site that can combine with the complementary site of a foreign antigen, as on a virus or bacterium, thereby disabling the antigen and signaling other immune defenses. Abbreviation: Ab See more.
Antibody - Simple English Wikipedia, the free encyclopedia
Antibodies (also called immunoglobulins) are large Y-shaped proteins.They are found in the blood or other body fluids of vertebrates.Antibodies are the key element in the adaptive immune system.. The antibody recognizes a unique part of the foreign target called an antigen. Each tip of the "Y" of an antibody contains a structure (like a lock) that fits one particular key-like structure on an ...
Antibody | Article about antibody by The Free Dictionary
antibody, protein produced by the immune system (see immunity immunity, ability of an organism to resist disease by identifying and destroying foreign substances or organisms.
Antibody - definition of antibody by The Free Dictionary
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 ...
Antibody - Lab Tests Online
A protein produced by lymphoid tissue in response to the presence of an antigen. Find Us On Social Media: Facebook Twitter Google Plus