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51.4 MB (51.0 MB compressed)
4572 x 3932 pixels
38.6 x 33.3 cm ⏐ 15.2 x 13.1 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
T lymphocyte and prostate cancer cell. Coloured scanning electron micrograph (SEM) of a T lymphocyte cell (blue) attached to a prostate cancer cell. T lymphocytes are a type of white blood cell that recognise a specific site (antigen) on the surface of cancer cells or pathogens and bind to it. Some T lymphocytes then signal for other immune system cells to eliminate the cell. The genetic changes that cause a cell to become cancerous lead to the presentation of tumour antigens on the cell's surface. Magnification: x3500 when printed at 10 centimetres wide.
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