Our immune system is a highly complex interconnected network of cells, vessels, and organs designed to fight pathogens and maintain our health. The immune response maintains our health as it applies three increasing levels of response to invading pathogens. Furthermore, these responses involve a wide range of extremely intelligent immune cells working together throughout the body. The circulatory system, the immune system, and lymphatic system collectively provide immune cells access to defend and protect every crevice of our anatomy where if needed, these amazing cells are able to communicate, organize, and work together in an orchestrated systematic attack on an invader.
The immune system is able to search, find, and destroy pathogens because it has a highly complex defense system which specializes in finding, recognizing, and responding to invaders. The immune system has a brilliant way to communicate, find, and identify a vast array of pathogens. Most importantly, immune cells are able to identify and distinguish between the body tissue, which is referred to as, "self," and invaders as well as infected tissue. Additionally, the immune system has a tiered system of strengthening attacks allowing it to wage war against a plethora of pathogens. To that end, the immune system has an arsenal of specialized troops, or cells that are able to destroy invaders. Furthermore, the immune system is able to remember every pathogen it touches. To summarize, the immune system is made up of a diverse group of highly intelligent cells, designed to carry out specific jobs within this defense process. This fleet of cells works together, communicating and organizing their attack against a pathogen.