MICHAEL ABBEY / SCIENCE PHOTO LIBRARY MICHAEL ABBEY / SCIENCE PHOTO LIBRARY
Light micrograph (LM) of a section of human skin that has been tattooed. The pigment (black) is in the dermal layer (pink) of the skin. Unlike the epidermis (purple), the dermis is not shed. The injection of the pigment triggers an immune response that results in the pigment becoming trapped inside fibroblast cells (light purple). The lack of shedding of the dermis and the engulfing by fibroblasts, lead to the permanence of the tattoo. Magnification: 34x at 35mm.
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