LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE / SCIENCE PHOTO LIBRARY. LONDON SCHOOL OF HYGIENE & TROPICAL MEDICINE / SCIENCE PHOTO LIBRARY.
Transmission electron micrograph of the virus causing AIDS (Acquired Immune Deficiency Syndrome). The virus particles (designated HIV - Human Immunodeficiency Virus) are seen here budding off from an H9 cell, 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 and Kaposi's sarcoma, a type of skin cancer. The virus is transmitted sexually & through contaminated blood. Magnification: X150,000 at 6x5 inch size.
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