immunestejärjestelmän
Immunestejärjestelmän, known in English as the immune system, is a complex network of cells, tissues, and organs that work together to defend the body against harmful invaders. These invaders can include pathogens such as bacteria, viruses, fungi, and parasites, as well as abnormal cells like cancer cells. The immune system's primary function is to recognize these foreign substances or abnormal cells, neutralize or eliminate them, and then remember them to mount a quicker and more effective response if they are encountered again.
The immune system is broadly divided into two main branches: the innate immune system and the adaptive
When the immune system functions correctly, it protects the body from disease. However, sometimes it can malfunction.