White blood cells (WBCs) are essential defenders in your immune system, protecting the body against infections, bacteria, and viruses. They identify harmful pathogens, destroy them, and help the body remember threats for future immunity. Different types of WBCs, such as neutrophils, lymphocytes, and monocytes, work together to fight infections and promote healing. For example, neutrophils are the first responders, while lymphocytes build long-term immunity. Maintaining healthy WBC levels is crucial for resistance against diseases. When infections become severe, antibiotics like ceftriaxone injection may be prescribed. Finding a reliable ensures safe, effective treatment and supports better healthcare outcomes.