MICROSCAPE / SCIENCE PHOTO LIBRARY MICROSCAPE / SCIENCE PHOTO LIBRARY
Human skin tumour classified as a squamous keratoacanthoma. This is a benign skin disease characterized by thickened convoluted epidermis and excessive keratin production forming a central crater-like structure. Often growing in excess of 1cm, these tumours nevertheless regress and do not progress to malignancy. Solar radiation is one possible cause of this disorder. Magnification x13 when printed at 10cm height.
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