What leaves the blood after circulating for only a day or two, and becomes the large tissue phagocytes known as macrophages?

Question

Quizplus · Accepted Answer

Monocytes leave the blood after circulating for only a day or two and develop into macrophages, which are large tissue phagocytes. Eosinophils and basophils are types of white blood cells that have specific functions in the immune system, but they do not become macrophages. Lymphocytes are also a type of white blood cell, but they have a different function and do not develop into macrophages.

What Leaves the Blood After Circulating for Only a Day