The body is protected from harmful intruders like viruses, bacteria,

fungus, and parasites by the immune system, which is a complex

network of cells, tissues, and organs. It is necessary to have a

healthy immune system in order to keep one's health in good

standing, and having an immune system that is fully operational is

essential for warding off infections, preventing sickness, and

promoting overall well-being.

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Lydbok: 24. mai 2023