Question

why monocytes are called as scavenger's?

Answer 1

Because they phagocytosis or kill microorganisms...

Answer 2

Monocytes/macrophages circulate in the blood and become macrophages in the tissues. These cells are very important in alerting the immune system about an infection. Macrophages are scavengers whose job is to engulf or eat up infecting germs and even infected cells.
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