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Kaposi's sarcoma. Coloured transmission electron micrograph (TEM) of cancer cells in Kaposi's sarcoma - a type of skin cancer common in AIDS (Acquired Immune Deficiency Syndrome). The red blobs are the remains of a red blood cell that has been ingested (erythrophagocytosis) by one of the tumour cells. This process is a common feature in endothelial cell tumours. The orange and blue structures are cell nuclei. The cells around them show highly irregular shapes, typical of cancer. Kaposi's sarcoma is highly aggressive in victims of AIDS, spreading rapidly across the skin and through the mouth to internal organs. Magnification x1900 at 6x4.5cm size.
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