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Platelet-aggregating factor

platelet-aggregating factor n.
Abbr. PAF
A substance released from rabbit basophilic white blood cells that causes aggregation of platelets and is involved in the deposition of immune complexes. Also called platelet-activating factor.


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  • Platelet-derived growth factor

    platelet-derived growth factor n. A substance in platelets that is mitogenic for cells at the site of a wound, causing endothelial proliferation.

  • Platelet factor 3

    platelet factor 3 n. A phospholipid lipoprotein blood coagulation factor derived from platelets that acts with certain plasma thromboplastin factors to convert prothrombin to thrombin.

  • Plateletpheresis

    plateletpheresis plate·let·phe·re·sis (plāt’lĭt-fə-rē’sĭs, -fěr’ə-) n. A process in which platelets are removed from donated blood and the remaining components are returned to the donor.

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