How Does the Immune System Work? Being healthy is a top priority in our lives right now…and almost everyone’s best friend is their immune system. The immune system is a complex system of cells and molecules that protects our bodies from outside invaders like infections, bacteria, and viruses, called antigens. These antigens attach themselves to receptors on immune cells, which then triggers the immune system response. Then, the immune system stores the antigens’ DNA and makeup before creating, distributing, and storing white blood cells that fight these bacteria and viruses. Innate vs Adaptive Immune System The immune system is actually made up of two subdivisions: the innate and adaptive immune systems. The innate system is more general. It provides a non-specific defense against germs and outside bacteria that enter through the skin or digestion. The adaptive immune system is more specific. It creates antibodies to fight specific germs and viruses that enter the body. This is the immune system that stores the DNA information of certain antigens to create specific antibodies to fight them off.
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