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# Innate and Adaptive Immune Cells This table describes different types of immune cells, their origins, functions, and targets. | Cell | Type | White | Derived from | Differentiate into/ | Innate or | Functions | Main targets | |---|---|---|---|---|---|---|---| | Mast Cells | Granulocyte | yes | b...

# Innate and Adaptive Immune Cells This table describes different types of immune cells, their origins, functions, and targets. | Cell | Type | White | Derived from | Differentiate into/ | Innate or | Functions | Main targets | |---|---|---|---|---|---|---|---| | Mast Cells | Granulocyte | yes | bone marrow myeloid stem cell | | Innate | Once activated, release wide variety of inflammatory mediators (cytokines) from various antigens: allergens, pathogens, and physiological mediators. Against hypersensitivity reactions in the bloodstream—histamine released in response to antibodies which dilates blood vessels bringing more immune cells to area of injury. | Host defense to parasitic infection; Allergic reaction | | Dendritic Cells | Mononuclear leukocytes | yes | monocytes. Found in nodes and spleen. | | Innate | Link innate and adaptive immunity—act as messengers between the two; Most potent type of antigen-presenting cells; Key regulator of immune system; Switch on cell surface receptors which activate immature T cells and stimulate growth and differentiation of B cells to kick start the adaptive immune response. | Capture and process antigens | | Granulocyte | | | | | | | | **Notes:** * **Derived from:** Indicates the origin cell type. * **Differentiate into/:** Shows the cell types in which the cell can differentiate. * **Innate or:** whether the immune cell belongs to the innate or adaptive immune response. * **Functions:** describe the function of the cell. * **Main targets:** describes what are the main targets (e.g. pathogens).