Neutrophil
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Neutrophils are a type of white blood cell. More specifically, they form the most abundant type of granulocytes and make up 40% to 70% of all white blood cells in humans. They form an essential part of the innate immune system, with their functions varying in different animals.
Neutrophils with segmented nuclei surrounded by erythrocytes and platelets. Intra-cellular granules are visible in the cytoplasm (Giemsa stained).
Hypersegmented neutrophil
Scanning electron micrograph of a neutrophil (yellow) phagocytosing anthrax bacilli (orange). Scale bar is 5 μm.
Micrograph showing several neutrophils during an acute inflammation
White blood cell
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White blood cells, also called immune cells or immunocytes, are cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. White blood cells include three main subtypes: granulocytes, lymphocytes and monocytes.
A scanning electron microscope image of normal circulating human blood. In addition to the irregularly shaped leukocytes, both red blood cells and many small disc-shaped platelets are visible.
Neutrophil engulfing anthrax bacteria