Fagos, or phagocytes, are a type of immune cell that play a crucial role in the body's defense system. They are responsible for engulfing and digesting harmful pathogens, such as bacteria and viruses, as well as dead or damaged cells. This process is known as phagocytosis, which helps to keep the body healthy and free from infections. There are several types of fagos, including macrophages and neutrophils. These cells are found throughout the body, particularly in tissues and the bloodstream. By identifying and eliminating threats, fagos contribute significantly to the overall immune response, helping to maintain the body's balance and protect against disease.