page_title: Monocyte
hierarchical_section_title: Monocyte
caption_attribution_description: English: Micrograph of Giemsa-stained monocytes
context_page_description: Monocytes are a type of leukocyte, or white blood cell. They are the largest type of leukocyte and can differentiate into macrophages and myeloid lineage dendritic cells. As a part of the vertebrate innate immune system monocytes also influence the process of adaptive immunity. There are at least three subclasses of monocytes in human blood based on their phenotypic receptors.
context_section_description: Monocytes are a type of leukocyte, or white blood cell. They are the largest type of leukocyte and can differentiate into macrophages and myeloid lineage dendritic cells. As a part of the vertebrate innate immune system monocytes also influence the process of adaptive immunity.  There are at least three subclasses of monocytes in human blood based on their phenotypic receptors.
caption: Monocytes under a light microscope from a peripheral blood smear surrounded by red blood cells
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