Figure 1. Anatomy of the skin.

Figure 1

Anatomy of the skin. Skin is composed of three layers, starting with the outermost layer: the epidermis, dermis, and hypodermis. Epidermis is a stratified squamous epithelium that is divided into four layers, starting with the outermost layer: stratum corneum (SC), stratum granulosum (SG), stratum spinosum (SS), and stratum basale (SB). Outer root sheath of the hair follicle is contiguous with the basal epidermal layer. Stem cell niches include the basal epidermal layer, base of sebaceous gland, hair follicle bulge, dermal papillae, and dermis.

From: Skin tissue engineering

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StemBook [Internet].
Cambridge (MA): Harvard Stem Cell Institute; 2008-.
Copyright: © 2009 David J. Wong and Howard Y. Chang.

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