Figure 1: High resolution Micro-CT 4 weeks after implantation of an arteriovenous loop in a particulated porous hydroxyapatite and beta-tricalcium phosphate matrix filled with fibrin (10 mg/mL fibrinogen and 2 IU/mL thrombin) and application of fibrin-gelimmobilized angiogenetic growth factors VEGF165 und bFGF (100 ng/mL each).