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Neutrophil
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Neutrophils are a type of leukocytes that make up over half of the volume of white blood cells. They form in the bone marrow and travel throughout the body in the blood, tissues and lymph nodes.
Neutrophils are a subset of granulocytes. Their cytoplasm stains lightly and contains small, lavender colored granules. They are about 12-15 micrometers in diameter and have dark-staining multilobed nuclei.
Neutrophils are active phagocytes that ingest bacteria and release enzymes to eliminate them. They can be considered the first responders of the (innate) immune system as they are often the first leukocytes to be activated in response to a invading pathogen.
| Terminology | English: Neutrophil Latin: Granulocytus neutrophilus |
| Definition | Neutrophils are a type of white blood cells, also known as leukocytes, that act as the immune system's first line of defense. |
| Function | Neutrophils are responsible for killing and digesting invading bacteria. |
Learn more about the different components of blood in the following study unit:
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