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50.9 MB (19.6 MB compressed)
4931 x 3608 pixels
41.7 x 30.5 cm ⏐ 16.4 x 12.0 in (300dpi)
NIGEL DOWNER / SCIENCE PHOTO LIBRARY NIGEL DOWNER / SCIENCE PHOTO LIBRARY
Light micrograph of a section through human cancerous tissue showing anal cancer. This is a rare type of cancer that affects the anus, which can start in any part of the anus. There are a range of symptoms including bleeding, itching and a discharge of mucus. Other symptoms are often similar to haemorrhoids and anal fissures. Most anal cancers are caused by the human papillomavirus (HPV).
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