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(A) Openings on the periosteal surface corresponding to the points of entry of the periosteal vessels. Unstained hemicortex (bar = 100 µm). (B) Detail of an opening with the injected vessel inside. Unstained hemicortex (bar = 50 µm). (C) Transverse section of the mid-shaft documenting the vascular connection between the intracortical network and marrow on the endosteal surface (arrowheads). Haematoxylin-eosin stain (bar = 200 µm).
