Answer:
Phagocytosis
Step-by-step explanation:
Both macrophages and neutrophils are phagocytes, this means that they engulf large cells (up to 0.5 µm) to kill them, or small particles in order to eliminate them from the circulation.
Phagocytes can be used to acquire nutrients but their most important task is to kill invading pathogens as a part of the immune system.
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