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Skin

The skin is the largest organ of the body.  It consists of the epidermis and the dermis.  The epidermis is the outer cellular layer of stratified squamous epithelium, which is avascular and varies in thickness.  The dermis is a dense bed of vascular connective tissue.

The skin functions as a mechanical and permeability barrier, and as a sensory and thermoregulatory organ. It also can initiate primary immune responses.

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