Figure 1: Blood sample after CGF protocol of centrifugation. Three layers are obtained: PPP, upper layer; CGF, middle layer; RBC, lower layer (A). CGF was removed from the tube, using sterile tweezers and cut the red part (RP) at 0,5 cm under buffy coat (BC) (B). The obtained CGF consists in three parts: the upper white part (WP), the downer red part (RP) and the middle BC part (C). Bar = 1 cm.