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Immune System and its Role



The immune system has a very vital role. It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.

As long as your immune system is running smoothly, you don't notice its presence. But if it stops working properly - because it's weak or can't fight particularly aggressive germs - you get ill.

Germs that your body has never encountered before are also likely to make you ill. Some germs will only make you ill the first time you come into contact with them.

Without an immune system, we would have no way to fight harmful things that enter our body from the outside or harmful changes that occur inside our body.

The main tasks of the body's immune system are to fight disease-causing germs (pathogens) like bacteria, viruses, parasites or fungi, and to remove them from the body, to recognize and neutralize harmful substances from the environment to fight disease-cells in the body, such as cancer cells.

There are two subsystems within the immune system, known as the innate (non-specific) immune system and the adaptive (specific) immune system. Both of these subsystems are closely linked and work together whenever a germ or harmful substance triggers an immune response.

The innate immune system mostly fights using immune cells such as natural killer cells and phagocytes ("eating cells"). The main job of the innate immune system is to fight harmful substances and germs that enter the body.

The adaptive immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with. This is also known as an "acquired" immune response.

The adaptive immune system is constantly learning and adapting, the body to fight bacteria or viruses that change over time.

Subodh A Pradhan
Author has been advocating
Importance of Immunity, for a decade

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