Macrophage cell engulfing bacteria. Coloured transmission electron micrograph (TEM) of bacteria (centre, rod-shaped) inside a macrophage cell. The macrophage cell (a type of white blood cell) has engulfed the bacteria in a process that is called phagocytosis. The bacteria are contained in a structure called a vacuole (pale yellow), which is distinct from the surrounding cell cytoplasm (orange). The bacteria will be digested by enzymes from cellular storage structures called lysosomes (not seen). The bacteria are tuberculosis bacteria (Mycobacterium tuberculosis), most often found infecting the lungs.
About the Artist -
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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