Fig. 4From: Fibrin clot and Leukocyte-rich platelet-rich fibrin show similar release kinetics and amount of growth factors: a pilot studyCumulative growth factor release at each time point quantified by ELISA. A–D shows growth factor release at each time point for PDGF-AB, VEGF, TGFβ1, and FGF, respectively. *Indicates statistical significant set at P < 0.05Back to article page