Histological sections of commercial (A, left) and autologous (B, right) fibrin glue, implanted in an equine ectopic model for 14 days. CFG appears contracted and is easily recognizable (A, fg); the glue is surrounded by a front of neutrophil granulocytes (A, black arrows); this is not present in the area where the autologous fibrin was implanted (B), where some macrophages and fibroblasts are present (C) (black bar = 200 μ). Color images available online at www.liebertpub.com/tec