NIBSC / SCIENCE PHOTO LIBRARY NIBSC / SCIENCE PHOTO LIBRARY
AIDS. False-colour scanning electron micrograph of a T-lymphocyte infected with Human Immunodeficiency Virus (HIV), the causative agent of AIDS. An infected T-cell typically has a lumpy appearance with irregular rounded surface protrusions. The small spherical virus particles (coloured green) 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 a person's immune system in AIDS. The T-cell shown here is from a culture cell line called H9. Magnification: x4000 at 6x7cm size, x1800 at 35mm size. Vertical version. Horizontal version is M050/194.
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