What is "monocyte"?

Monocyte is a type of white blood cell found in the human body that plays a critical role in the immune system. They are responsible for phagocytosis, the process of engulfing and eliminating foreign substances, and are involved in initiating immune responses and promoting inflammation. Monocytes also have the ability to differentiate into macrophages or dendritic cells, which further contribute to immune defense and regulation.