Before revision: Platelet activation in response to tissue damage occurs during the process of making PRF release several biologically active proteins including; platelet alpha granules, platelet‑derived growth factor (PGDF) , transforming growth factors‑β (TGF‑β), vascular endothelial growth factor (VEGF), and epidermal growth factor .
After revision: Platelet activation in response to tissue damage occurs during the process of making PRF release several biologically active proteins including; platelet alpha granules, platelet‑derived growth factor (PGDF) .