Abstract
A model was developed, on the basis of which the features of healing of a full-thickness skin wound were studied in laboratory rats using macro-, micro- and ultramicroscopic methods. It was found that during this process, two borders are formed on the surface of the wound ‒ one on the edge of the dermis and the second on the edge of the epidermis. It is shown that a granulation tissue can be formed not only due to the restructuring of fibrin, but also due to the reorganization of a subcutaneous tissue. It is hypothesized that the wound contraction occurs not only due to the contraction of collagen fibrils by myofibroblasts, but also due to the retraction of collagen fibers in the cytoplasm of these cells. Attention is drawn to the restoration of the elastic layer as an essential component of the skin regenerate. The reasons for the appearance of a longitudinal elongated shape and orientation along the sagittal line of the scar, which remains for life at the site of the former skin damage, are explained.
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