Fig. 1
From: Antibacterial effects of platelet-rich fibrin produced by horizontal centrifugation

Photos of leukocyte- and platelet-rich fibrin (L-PRF) and H-PRF. a Photos of platelet-rich fibrin (PRF) obtained after centrifugation by both protocols. Note the horizontal-layer centrifugation in H-PRF versus the angular centrifugation in L-PRF. b Weight and size measurements of PRF clots