White blood cells (WBCs), or leukocytes, are crucial for the immune system. There are five main types: neutrophils, which fight bacteria; lymphocytes (B cells and T cells), which produce antibodies and regulate immune responses; monocytes, which become macrophages to engulf pathogens; eosinophils, which target parasites and allergens; and basophils, which release histamine during allergic reactions. Each type plays a specific role in defending the body. When treating infections that affect WBC counts, antibiotics like ceftriaxone injection may be prescribed. Healthcare providers and clinics often seek ceftriaxone injection wholesale to ensure availability for urgent and broad-spectrum antibacterial treatment.