Fig. 6From: Intraoperative collection of autologous platelet-rich plasma from the cardiopulmonary bypass circuit upon initiation of extracorporeal circulationChange of platelet aggregation ability using collagen. Maximum aggregation rate increased significantly for collagen 2.0 μg/ml. However, an increase in maximum aggregation rate was not observed in 0.25 μg/ml collagen due to its low reagent concentrationBack to article page