antigen
의미: A substance that stimulates the immune system to produce antibodies against it, typically a protein on the surface of a bacterium, virus, or other foreign organism.
Antigens are the molecular targets that the immune system recognises as foreign. Each antigen has a unique shape that a specific antibody can bind to, like a lock and key. Vaccines work by presenting harmless antigens to the immune system, training it to recognise and fight the real pathogen. Antigen tests (such as lateral flow tests) detect the presence of specific viral proteins.
예문
- The vaccine contains a synthetic antigen that mimics the protein found on the surface of the virus. 该疫苗含有一种合成抗原,模拟病毒表面的蛋白质。La vacuna contiene un antígeno sintético que imita la proteína de la superficie del virus.そのワクチンにはウイルス表面のタンパク質を模倣した合成抗原が含まれている。그 백신에는 바이러스 표면의 단백질을 모방한 합성 항원이 포함되어 있다.
- Lateral flow antigen tests provide rapid results but are less sensitive than PCR tests. 横向流动抗原检测能快速提供结果,但灵敏度不如PCR检测。Las pruebas rápidas de antígenos de flujo lateral proporcionan resultados rápidos, pero son menos sensibles que las pruebas PCR.ラテラルフロー抗原検査は迅速に結果を得られますが、PCR検査よりも感度は低いです。측면 유동 항원 검사는 신속하게 결과를 얻을 수 있지만, PCR 검사보다 감도가 낮습니다.
- Blood typing is based on the presence or absence of specific antigens on the surface of red blood cells. 血型鉴定基于红细胞表面特定抗原的有无。La determinación del grupo sanguíneo se basa en la presencia o ausencia de antígenos específicos en la superficie de los glóbulos rojos.血液型の判定は、赤血球表面における特定の抗原の有無に基づいています。혈액형 판정은 적혈구 표면에 있는 특정 항원의 유무에 기반합니다.
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사용 가이드
맥락: academic, professional, media
어조: neutral
기원과 역사
A contraction of 'antibody generator,' coined in the early 20th century. The components derive from Greek anti (against) and -gen (producer).
문화적 배경
Era: Modern
Generation: All ages
Social background: Universal
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