BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of a malignant (cancerous) melanoma cell. This cancer arises from the skin's melanocytes, the cells that produce the pigment (melanin) that give skin its colour. It is an aggressive cancer that often spreads (metastasises) to other tissues and the prognosis is poor.
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