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50.1 MB (50.0 MB compressed)
4720 x 3709 pixels
39.9 x 31.5 cm ⏐ 15.7 x 12.4 in (300dpi)
THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY
Cell infected with HIV. Coloured scanning electron micrograph (SEM) of HIV particles (pink) budding from the membrane of a host cell. HIV (human immunodeficiency virus) attacks CD4+ T-lymphocytes (specialised white blood cells), which are crucial in the body's immune system. It enters the cell and makes many copies of itself, which then destroy the cell as they emerge through its membrane. This severely weakens the immune system, causing AIDS (acquired immunodeficiency syndrome). Magnification: x43,000 when printed at 10 centimetres wide.
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