Mini Review - Journal of Clinical Immunology Research (2022) Volume 5, Issue 4
Immunity is the body's ability to defend itself against various diseases, infections and contagions.
Immunity is a medical term used to describe the body's ability to resist and defend itself against infections, diseases or other biological or chemical hazards. Immunity functions like a mechanism whose role is to establish barriers against pathogens, cancer cells, harmful molecules, and toxins. The body's overall defense system is called the immune system. The basic tasks of the immune system are the destruction and expulsion of pathogens such as bacteria, viruses, parasites or fungi, the recognition and destruction of harmful substances from the environment, as well as the fight against their own cells that have changed due to disease. For the defense to be effective, it is important for the system to recognize the difference between its own and foreign cells. In healthy people, the system will not attack what is its own. But when it comes to autoimmune diseases, then the immune system turns against the tissues in your own body. Tissue-attacking antibodies, called autoantibodies, are also produced. On the other hand, the immune system can react excessively violently to one or more otherwise harmless substances. Then we talk about allergens, or allergies.Author(s): Sinisa Franjic