Objective: to study, using immunohistochemical methods, the content of the vascular endothelial growth factor and trans­forming growth factor (TGF-β) in tissues adjacent to bone frag­ments after fracture in humans, as well as in autofibrin obtained in vitro. Methods: biopsy samples (interfragmental fibrin-blood clot, periosteum, muscular and fatty tissue), 9 of the victims recovered from the near fracture zone with fractures of limb bones during their open comparison were studied. In addition, fibrin-blood clots from the venous blood of the same patients ob­tained during the operation by the method of J. Choukroun were analyzed. Results: 1–2 days after the fracture, vascular endothe­lial growth factor concentrates in fibrin, forming a fibrin-blood clot in the near-fracture zone. On the 5 th –12 th day, the intensity of the reaction to vascular endothelial growth factor in fibrin decreases, or it disappears, and expression of the factor mani­fests itself in the cells of the regenerate — osteocytes, osteo­blasts, fibroblasts, endotheliocytes. 10–12 days after injury, a positive reaction to vascular endothelial growth factor is de­fined in endotheliocytes and osteoblasts. The reaction to TGF-β in fibrin-blood clot and regenerate tissues was observed exclu­sively in cells. In autologous fibrin clots, vascular endothelial growth factor expression was observed in fibrin, and TGF was observed in the blood cells that remained in it. However, the in­tensity of the response to vascular endothelial growth factor in fibrin formed in vitro was uneven. Conclusions: vascular en­dothelial growth factorconcentration on the 1–2 day after frac­ture in the fibrin-blood clot in the near fracture zone is a strong signal for the restoration of blood supply in the area of inju­ry. Expression of TGF-β at all times was found only in cells. The uneven distribution of vascular endothelial growth factor in fibrin formed in vitro should be considered when it is used to optimize bone repair.