LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE / SCIENCE PHOTO LIBRARY LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE / SCIENCE PHOTO LIBRARY
False-colour transmission electron micrograph (TEM) of the virus causing AIDS. Two of the viruses (designated HIV-1, or Human Immunodefic- iency Virus type 1) are seen here budding off from an H9 cell (blue), a special cancer cell line for culturing the virus. HIV destroys T-lymphocytes, key cells in the body's immune response to infection. A disabled defence system is vulnerable to "opportunistic" infections, such as a normally rare form of pneumonia & Kaposi's sarcoma, a type of skin cancer. The virus is transmitted sexually & through contaminated blood. Magnification: x35,200 at 35mm size, x70,400 at 6x7cm size. Rossdale colouring. Original is BW print M050/028.
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