In the dermis of inter-appendage and glabrous skin, interstitial collagen types I, III, and V are abundant, while fibronectin is scarce. Conversely, in the morphogenetically active foci of cutaneous appendages, interstitial collagen is scarce or absent, whereas fibronectin is abundant. Type IV collagen and laminin are localized at the dermal-epidermal junction and distributed evenly.
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