Keratoacanthoma. Light micrograph of a section through a keratoacanthoma skin lesion. The surface layers are across top,including the hard keratin layer. The lesion consists of a localised proliferation of squamous cells that forms a cratered nodule. The nodule grows over several weeks before gradually disappearing. However,the unsightly nodule is often surgically removed. The cause of keratoacanthoma is unknown,although exposure to sunlight appears to be a factor. Magnification: x60 when printed at 10 centimetres wide. Human tissue | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 3426 px × 4572 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |