Monocyte
Monocytes originate from the common myeloid progenitor which differentiates to become a granulocyte and then a monocyte. Monocytes are a phagocytic cell found in the blood, they enter tissues and differentiate to form phagocytic Macrophages[1].
References:
- ↑ Murphy, K. (2012) Janeway's Immunobiology, 8th Edition, New York: Garland Science. p.4-6