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2,910 विचारों · 01/17/24
The Immune System
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1,947 विचारों·
01/17/24
The immune system is the body's defense against infectious organisms and other invaders. Through a series of steps called the immune response, the immune system attacks organisms and substances that invade body systems and cause disease.
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2,910 विचारों · 01/17/24
