Immune system
Definition
The immune system is the body’s defense system that protects us from harmful germs like bacteria and viruses.
Main Details
It includes organs, cells, and proteins that work together
White blood cells fight infections
It can recognize harmful substances
It destroys germs and infected cells
It remembers germs for faster response next time
Examples
When a cut heals, the immune system is working
When you recover from a cold or fever
Vaccination helps the immune system prepare for diseases
Important Points
The immune system protects the body all the time
It has two types: innate (natural) and adaptive (learned)
Antibodies help in fighting germs
Good habits like healthy food and sleep keep it strong
A weak immune system can make you sick easily
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