CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Skin lesion. Light micrograph of a section through a seborrheic wart. Also known as keratoses, these raised skin lesions develop in the elderly. They are not true warts, but are caused by a proliferation of basal cells in the skin, and are often pigmented. Melanocyte cells that contain the pigment melanin are seen (brown). The lesions are often raised on a central stalk, and therefore are subjected to trauma, which may cause them to bleed and become irritated. Although they are benign many people have seborrheic ketoses removed for cosmetic reasons.
Model release not required. Property release not required.