white blood cells

What are white blood cells?

White blood cells (WBCs), also called leukocytes, are an essential part of your body’s immune system. Their main job is to defend you against infections, combat harmful organisms such as bacteria, viruses, and parasites, and help regulate inflammation and allergic reactions. Unlike red blood cells, which carry oxygen throughout the body, white blood cells are …
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What are neutrophils?

Neutrophils are a type of white blood cell and an important part of the body’s innate immune system, which is the body’s first line of defense against infection and injury. They are the most common type of white blood cell, making up between 50% and 80% of all white blood cells in the bloodstream. Neutrophils …
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