HELENE FOURNIE, ISM / SCIENCE PHOTO LIBRARY HELENE FOURNIE, ISM / SCIENCE PHOTO LIBRARY
Human skin layers, illustration. The surface of the skin is at top. The layers are, from top to bottom: the cornified layer (stratum corneum) with desquamation (shedding of dead skin cells) on the surface, the granular layer (stratum granulosum), the spinous layer (stratum spinosum), and the basal or germinal layer (stratum basale or germinativum). This final layer is the junction between the epidermis and the dermis, and includes melanocyte cells (one at lower left, blue) that produce skin pigmentation.
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