Fenestrated capillaries in the rat paw dermis adjacent to epidermis and skin appendages.
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.
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*