AMI IMAGES / SCIENCE PHOTO LIBRARY AMI IMAGES / SCIENCE PHOTO LIBRARY
Cancer cell attacked by macrophages. Coloured scanning electron micrograph (SEM) of a cancer cell, showing macrophage white blood cells (lumps) attached to it. A group of macrophages have identified the cancer cell as a foreign body, attached themselves to it, and released chemicals to kill it. The cancer cell has rounded-off and lost its microvilli. It will eventually shrink and die.
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