a type of protein made by plasma cells (a type of white blood cell) in response to an antigen (foreign substance). each antibody can bind to only one specific antigen. the purpose of this binding is to help destroy the antigen. antibodies can work in several ways, depending on the nature of the antigen. some antibodies destroy antigens directly. others make it easier for white blood cells to destroy the antigen.
出典:Wiktionary
出典:『Wiktionary』 (2026/01/20 11:23 UTC 版)
antibody (plural antibodies)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/24 10:02 UTC 版)
An antibody, also known as an immunoglobulin, is a large Y-shaped protein used by the immune system to identify and neutralize foreign objects such as bacteria and viruses. The antibody recognizes a unique part of the foreign target, termed an antigen. Each tip of the "Y" of an antibody contains a paratope (a structure analogous to a lock) that is specific for one particular epitope (similarly analogous to a key) on an antigen, allowing these two structures to bind together with precision. Using this binding mechanism, an antibody can tag a microbe or an infected cell for attack by other parts of the immune system, or can neutralize its target directly (for example, by blocking a part of a microbe that is essential for its invasion and survival). The production of antibodies is the main function of the humoral immune system.
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the immune system
体のこぶ
an antidiluvian
国家.
the body politic
the antinuclear lobby
rhesus factor antibody
the condition of one's body
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