CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
AIDS virus. Coloured Transmission Electron Micro- graph (TEM) of a Human Immunodeficiency virus (HIV) budding from the surface of a T-lymphocyte blood cell. At centre is a spherical virus (blue); the T-cell cytoplasm is seen at right. HIV viruses are believed to cause AIDS (Acquired Immune Deficiency Syndrome). HIV infects the T-cell, a cell involved in the body's immune response, and instructs the cell to produce more HIV viruses which bud from the cell. By this process of infection the T-cell is killed. Depletion of T- cells in the blood results in the destruction of a person's immune system in the disease of AIDS.
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