Neutrophile

Neutrophil

Neutrophils are the most abundant type of white blood cells in most mammals. They form an essential part of the innate immune system. Their functions vary in different animals.

Structure

Neutrophils are a type of phagocyte and are normally found in the bloodstream. They are the predominant cells in pus, accounting for its whitish/yellowish appearance.

Function

Neutrophils are recruited to the site of injury within minutes following trauma by the process of chemotaxis. They are the hallmark of acute inflammation.

Clinical significance

In conditions causing neutropenia, there is an abnormally low concentration of neutrophils in the blood. This condition reduces the body's ability to fight off infection. Conversely, in neutrophilia, there is an abnormally high concentration of neutrophils in the blood, which can be an indication of acute inflammation.

See also

• Leukocyte
• Granulocyte
• Phagocyte
• Innate immune system

References

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External links

• Neutrophils at the US National Library of Medicine Medical Subject Headings (MeSH)

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