Release

Pus is a thick, yellow-white fluid that is composed of dead white blood cells, microorganisms, and cellular debris. It is typically released from a wound or infection, and is usually accompanied by inflammation and redness. Pus can range from being thin and watery to thick and sticky. It can also have a strong, unpleasant odor. Pus typically develops over time, beginning with a red, swollen area that is warm to the touch. As the infection progresses, the area may become filled with fluid, which then turns into pus.