sentence: Macrophages are large phagocytic leukocytes.
sentences_after: They can move across the cell membrane of capillary vessels and go between cells to hunt invading pathogens. Macrophages are the most efficient phagocytes, and can phagocytose substantial numbers of bacteria or other cells or microbes.
concept_name: macrophage
headings: Innate immune system Cells of the innate immune response Phagocytes Macrophages