platelet-activating factor


plate·​let-ac·​ti·​vat·​ing factor -ˌak-tə-ˌvāt-iŋ- How to pronounce platelet-activating factor (audio)
: phospholipid that is produced especially by mast cells and basophils, causes the aggregation of blood platelets and the release of blood-platelet substances (as histamine or serotonin), and is a mediator of inflammation (as in asthma)
abbreviation PAF

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Cite this Entry

“Platelet-activating factor.” Medical Dictionary, Merriam-Webster, Accessed 30 May. 2023.

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