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Phagocytosis. Coloured scanning electron micrograph of a polymorphonuclear white blood cell or leucocyte, attacking Bacillus cereus bacteria. The leucocyte (orange), part of the body's immune system, is attaching to and engulfing the Bacillus cells (blue, rod- shaped). It uses enzymes to digest the bacteria. This process of engulfment and digestion is known as phagocytosis. Highly mobile, phagocytic cells migrate to areas of tissue damage.

Phagocytosis. Coloured scanning electron micrograph of a polymorphonuclear white blood cell or leucocyte, attacking Bacillus cereus bacteria. The leucocyte (orange), part of the body's immune system, is attaching to and engulfing the Bacillus cells (blue, rod- shaped). It uses enzymes to digest the bacteria. This process of engulfment and digestion is known as phagocytosis. Highly mobile, phagocytic cells migrate to areas of tissue damage.

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