word
antigen presentation
AN-tih-jen preh-zen-TAY-shun
ˈæntɪdʒɛn ˌprɛzənˈteɪʃənListen
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Syllable breakdown
antigenpresentation
Dictionary meaning
the cellular process by which fragments of foreign proteins are displayed on the surface of antigen-presenting cells — primarily dendritic cells, macrophages, and B cells — in complex with major histocompatibility complex molecules, enabling T lymphocytes to recognise and respond to specific antigens; class I MHC molecules present peptides to cytotoxic CD8+ T cells, while class II molecules present to helper CD4+ T cells; essential for initiating adaptive immune responses
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