English Meaning & Definitions
A protein or other molecule located on the outer membrane of a cell, virus, or bacterium that can be recognized by the immune system and trigger an immune response.
- “The hepatitis B surface antigen is a key marker used in blood tests to detect active infection.”
- “Scientists are studying the surface antigens of the pathogen to develop a more effective vaccine.”
English Synonyms & Near Equivalents
English Antonyms & Opposites
Comprehensive Thesaurus Breakdown
Compare formal, informal, literary synonyms and register nuances for “surface antigen”.
The term is a compound of 'surface' (from Old French 'surface', from 'sur-' meaning 'on' + 'face') and 'antigen' (a portmanteau coined in the early 20th century from 'antibody' and 'generator'). In immunology, it refers specifically to markers located on the exterior of a cell or viral particle that the immune system recognizes as foreign.
Think of a 'surface' as the 'skin' of a cell, and an 'antigen' as a 'flag' that tells the immune system: 'I am here!'
Frequently Asked Questions About “surface antigen”
1. What is the meaning of “surface antigen” in English?
In English, surface antigen (noun) is defined as: “A protein or other molecule located on the outer membrane of a cell, virus, or bacterium that can be recognized by the immune system and trigger an immune response.”.
2. How do you use “surface antigen” in a sentence?
“The hepatitis B surface antigen is a key marker used in blood tests to detect active infection.”
3. What are English synonyms of “surface antigen”?
4. What is the etymology and word origin of “surface antigen”?
The term is a compound of 'surface' (from Old French 'surface', from 'sur-' meaning 'on' + 'face') and 'antigen' (a portmanteau coined in the early 20th century from 'antibody' and 'generator'). In immunology, it refers specifically to markers located on the exterior of a cell or viral particle that the immune system recognizes as foreign.
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