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Each of the white blood cell types has a task in helping the body fight infections. The lymphocytes help create antibodies that attack the invaders and mark them for destruction by the neutrophils, monocytes and macrophages.
Macrophages (a form of monocyte) engulf invaders and destroy them with powerful enzymes. The macrophage shown here is attacking streptococcus bacteria that cause pneumonia.
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Lymphocytes
