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<strong>Platelet</strong>s if activated release the alfagranules<br />
in the extracellular matrix.<br />
We can find three kinds of GF that have<br />
proliferative and differentiative effects :<br />
1) TKR GF ( TyrosineKinase Receptor ) (PDGF)<br />
2) SMAD GF ( SerineThreonine KinaseR.) (BMP<br />
+TGF Beta)<br />
3) FGF ( Mitogen-activated Receptor?)