Two examples of fixed macrophages are which?

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Fixed macrophages are tissue-resident macrophages that stay within a specific organ to perform local surveillance and phagocytosis. Classic examples are microglia in the brain and Kupffer cells in the liver (often called stellate macrophages in the liver). They originate from monocytes but settle in their tissue and remain stationary, handling debris clearance and immune signaling right where they reside. The other options describe cells that are not resident macrophages: neutrophils and eosinophils are circulating granulocytes that respond to infection; dendritic cells and Langerhans cells are antigen-presenting cells related to macrophages but not macrophages themselves; osteoclasts are bone-resorbing cells derived from the macrophage lineage and located in bone, while osteoblasts are bone-forming cells.