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Immediate and cumulative release of growth factors from the L-PRF samples. A Immediate growth factors (PDGF-AA and TGF-β1) release (ng/mL) as a function of time. B Cumulative growth factors (PDGF-AA and TGF-β1) release (pg/mL) as a function of time. L-PRF: leukocyte-platelet rich fibrin; PDGF-AA: platelet-derived growth factors-AA; and TGF-β1: transforming growth factor-beta1
