In the innate immune response, circulating monocytes typically differentiate into what cell type after migrating into tissues?
A
Macrophages
B
Neutrophils
C
Eosinophils
D
Plasma cells
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1
Understand the role of monocytes in the innate immune system: Monocytes are a type of white blood cell circulating in the bloodstream that can migrate into tissues when there is an infection or injury.
Recall the differentiation process: Once monocytes leave the bloodstream and enter tissues, they differentiate into a more specialized cell type that can perform specific immune functions.
Identify the cell types listed: Neutrophils and eosinophils are types of granulocytes that originate from the bone marrow, not from monocytes. Plasma cells are differentiated B cells involved in antibody production, unrelated to monocytes.
Recognize that monocytes differentiate into macrophages in tissues: Macrophages are large phagocytic cells that engulf pathogens and debris, playing a key role in innate immunity and tissue homeostasis.
Conclude that the correct answer is macrophages, as they are the differentiated form of monocytes after migration into tissues.