There are multiple human growth factors, with over 50 identified so far. Some common ones include insulin-like growth factor (IGF), epidermal growth factor (EGF), platelet-derived growth factor (PDGF), and fibroblast growth factor (FGF). These growth factors play essential roles in processes like cell growth, proliferation, and differentiation.

Platelet-rich fibrin contains cytokines and growth factor that aid in the regeneration of tissue. There is no guarantee that it will work 100% correctly but it does help.

The function of the platelets is to clot blood.There for it stops blood from flowing if a body part is cut. maintainence of haemostasis.(process which causes the bleeding to stop.) platelets secrete platelet-derived growth factor(PDGF)

A growth factor of corresponds to a growth rate of

A factor that limits the growth of a population.