释义 |
microparticle
microparticle (ˈmaɪkrəʊˌpɑːtɪkəl) na very small particleEncyclopediaSeempmicroparticle
mi·cro·par·ti·cle (mī-krō-par'tĭ-kĕl), 1. A very small particle, especially one that can pass through a filter of specified fineness. 2. A vesicle, ranging in size from 5 to 100 mcm, released from the membrane of a cell into the circulation. Microparticles are immunologically unique to their cells of origin and may play a role in antigen presentation. Increased numbers of certain kinds of microparticle may be found in the circulation in vascular and thrombotic disorders. [micro- + particle] microparticle (mī″krō-part′ĭ-kĕl) [ micro- + particle], MP1. A microscopic particle.2. A fragment of cytoplasm and cell membrane, released into the circulation when the cell is injured.FinancialSeeMP |