Macrophages, confocal light micrograph
Confocal light micrograph of macrophages from an African clawed frog embryo (Xenopus laevis) digitally arranged into a spiral. Macrophages are cells of the immune system. They arise early during embryogenesis and colonise all developing tissues. They phagocytose (engulf) and destroy pathogens, dead cells and cellular debris. Magnification: x200 at a printed image size of 10cm., by THEBIOCOSMOS/SCIENCE PHOTO LIBRARY
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