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Which molecule is responsible for attracting neutrophils to a damaged area in the body?

Question

Which molecule is responsible for attracting neutrophils to a damaged area in the body?

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Solution

The molecule responsible for attracting neutrophils to a damaged area in the body is known as Interleukin-8 (IL-8).

Here are the steps that explain how this process works:

  1. When there is tissue damage or infection in the body, the immune system responds by releasing various signaling molecules.

  2. One of these molecules is Interleukin-8 (IL-8), a type of chemokine produced by macrophages and other cell types such as epithelial cells.

  3. IL-8 has the ability to attract neutrophils, a type of white blood cell, to the site of damage or infection.

  4. The neutrophils then move towards the higher concentration of IL-8, a process known as chemotaxis.

  5. Once the neutrophils reach the damaged area, they begin to phagocytose, or engulf and destroy, the foreign particles, bacteria, or dead cells present.

  6. This is a crucial part of the body's immune response to injury or infection.

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