White blood cells play a vital role in defending the body against infections. They identify harmful pathogens such as bacteria, viruses, and fungi, then attack and destroy them through processes like phagocytosis and the release of antimicrobial substances. Some white blood cells produce antibodies that neutralize invaders, while others remember past infections to respond more quickly in the future. Their coordinated response keeps the immune system strong and balanced. In cases where infections are severe, treatments like antibiotics may be necessary. Healthcare providers often rely on trusted ceftriaxone injection distributors to ensure timely access to effective medications that support recovery.