What are Immune System, Antibodies, Antigens and T Cells?

Immune System, Antibodies, Antigens and T Cells

The body’s immune system understands the difference between itself and its foreigners, whenever an external bacteria, virus, or pathogen attacks the body, then this immune system becomes active. The body of living beings has evolved in suchΒ howΒ that when any crisis comesΒ thereon,Β the methodΒ of saving it automatically starts. In this, theΒ systemΒ of the bodyΒ incorporates aΒ hand. The immune system …

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