51.9 MB (1.9 MB compressed)
3719 x 4880 pixels
31.5 x 41.4 cm ⏐ 12.4 x 16.3 in (300dpi)
JUERGEN BERGER / SCIENCE PHOTO LIBRARY JUERGEN BERGER / SCIENCE PHOTO LIBRARY
Immune response. Coloured scanning electron micrograph (SEM) of a leucocyte (white blood cell, blue) and several Staphylococcus aureus bacteria. The leucocyte is part of the body's immune response against the presence of the bacteria (yellow). There are several types of white blood cell in the body, each with a specific function. Some are attracted to bacteria and engulf and destroy them. Some release antibodies to kill the cells, some bind to them directly, and some are responsible for mediating the entire response. Staphylococcus bacteria can cause boils and food poisoning. Magnification: x5,100 at 6x4.5cm size. Magnification; x5,500 at 5x7cm size.
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