NIBSC / SCIENCE PHOTO LIBRARY NIBSC / SCIENCE PHOTO LIBRARY
AIDS viruses. Coloured scanning electron micrograph (SEM) of the surface of a T-lymphocyte white blood cell (green) with AIDS viruses (pink) budding from it. The Human Immunodeficiency Virus (HIV) is the causative agent of Acquired Immune Deficiency Syndrome (AIDS). The T-lymphocyte is from a culture cell line known as H9. An infected T-cell typically has a lumpy appearance (as here). Small spherical virus particles visible on the surface are in the process of budding away from the cell membrane. Depletion of the population of T4-lymphocytes through HIV infection is the main reason for the destruction of the immune system in AIDS. Magnification: x28,000 at 6x7cm size. Magnification: x96,000 at 8x10 inch size.
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