The Immune System

The immune system is the body’s natural defense mechanism that protects against harmful pathogens like bacteria, viruses, and fungi. It does this through a network of cells, tissues, and organs that identify and attack invaders. Key players include white blood cells that recognize and destroy threats, antibodies that tag invaders, and organs like the lymph nodes and spleen that coordinate responses. The immune system also remembers past infections, allowing quicker responses in future encounters. A healthy immune system is essential for preventing illness and maintaining overall health.