What are macrophages found in the blood called?

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Prepare for the NBEO Histology Exam with comprehensive quizzes and practice questions. Study with flashcards and detailed explanations to ensure you're ready for the test day. Improve your histology knowledge efficiently!

Multiple Choice

What are macrophages found in the blood called?

Explanation:
Macrophages in tissues come from circulating monocytes; in the blood, the cells are called monocytes. Monocytes travel in the bloodstream and, after migrating into tissues, differentiate into macrophages that perform phagocytosis and antigen presentation. Lymphocytes are a separate group of white blood cells involved in adaptive immunity, and erythrocytes are red blood cells that carry oxygen. So the circulating blood cell that gives rise to macrophages is the monocyte.

Macrophages in tissues come from circulating monocytes; in the blood, the cells are called monocytes. Monocytes travel in the bloodstream and, after migrating into tissues, differentiate into macrophages that perform phagocytosis and antigen presentation. Lymphocytes are a separate group of white blood cells involved in adaptive immunity, and erythrocytes are red blood cells that carry oxygen. So the circulating blood cell that gives rise to macrophages is the monocyte.

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