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In platelets, the term "alpha granules" is used to describe granules containing several growth factors (such as insulin-like growth factor 1, platelet-derived growth factor, TGFβ), platelet factor 4 which is a heparin-binding chemokine, and other clotting proteins (such as thrombospondin and fibronectin.) The alpha granules express the adhesion molecule P-selectin. The other type of granules within platelets are called dense granules.
A deficiency of alpha granules is known as grey platelet syndrome.

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See also

External links

See also

★ Dense granule

External links

★ Platelet alpha-granules., Harrison P, Cramer E, , , Blood Rev, 1993