title: Fenestrated capillaries in the rat paw dermis adjacent to epidermis and skin appendages.
abstract: The fine structure of dermal blood vessels of male Wistar rats was studied in paw regions. Electron microscopy revealed a well-developed plexus of fenestrated capillaries in papillary dermis and adjacent to skin appendages. Intravenously injected ferritin escaped from some of these capillaries. It is suggested that these blood vessels play a role in the exchange of substances at sites of high epithelical turnover.
mesh_terms: D000818:Animals; D002196:Capillaries / Q000648:ultrastructure*; D002199:Capillary Permeability; D004727:Endothelium / Q000648:ultrastructure; D004817:Epidermis / Q000502:physiology; D005528:Foot; D006197:Hair / Q000502:physiology; D008297:Male; D051381:Rats; D012867:Skin / Q000098:blood supply*