The immune system is the body’s defense mechanism against harmful invaders such as viruses, bacteria, and other pathogens.
It is composed of various cells, tissues, and organs that work together to recognize and eliminate foreign substances from the body.
The immune system is capable of distinguishing self from non-self, allowing it to target only foreign invaders.
It also has a memory function, allowing it to recognize and respond more efficiently to future attacks by the same pathogen. A properly functioning immune system is essential for maintaining overall health and preventing illness.
