Here's why:

* Neutrophils are a type of white blood cell that are the first responders to infection and inflammation.

* They engulf and destroy bacteria and other pathogens. This process is called phagocytosis.

* When neutrophils die, they release their contents, including enzymes and other chemicals, which contribute to the characteristic white, creamy appearance of pus.

Other cells may also be present in pus, but neutrophils are the primary component. These include:

* Dead bacteria

* Other white blood cells (like macrophages and lymphocytes)

* Tissue debris

While pus is a sign of infection and inflammation, it's important to remember that it is the body's way of fighting off the infection.