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50.2 MB (50.0 MB compressed)
4563 x 3849 pixels
38.6 x 32.5 cm ⏐ 15.2 x 12.8 in (300dpi)
MICROSCAPE / SCIENCE PHOTO LIBRARY MICROSCAPE / SCIENCE PHOTO LIBRARY
Macrophage white blood cell. Transmission electron micrograph (TEM) of a section through a macrophage located within tissue, showing the nucleus (round, upper centre) and numerous lysosomes (dark spots). Lysosomes contain enzymes for digesting foreign particles. Macrophages are a type of large white blood cell that recognise foreign particles and phagocytose (engulf and digest) them. The slender finger-like extensions of the surface membrane able the macrophage to attach itself to its target. Magnification: x6,000 when printed 10 centimetres wide.
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