👉 The bacterial fluid, also known as pus, is a complex mixture primarily composed of dead white blood cells, bacteria, and cellular debris. It forms when the body's immune response to an infection or injury occurs; white blood cells gather at the site of infection to fight pathogens, while bacteria multiply and release toxins. The fluid's consistency can vary from thick and yellowish-green to clear or colorless, depending on the infection. It serves as a vital part of the immune system's defense mechanism, helping to isolate and neutralize harmful microorganisms.