Tetraspanins serve as molecular facilitators to regulate platelet thrombus formation

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Platelets are small fragments of megakaryocytes that circulate in the blood stream. They play an important role in preventing excessive blood loss at sites of tissue injury by sticking together and forming a haemostatic plug. Excessive platelet clumping in diseased blood vessels can lead to blockages and cause thrombotic diseases such as heart attack and stroke. We have discovered that tetraspanins serve to regulate platelet glycoproteins including integrin alphaIIbbeta, P2Y12 and thrombosis.