Immune system

The immune system is a system of biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.The immune system is a system of biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.Asthma, familial Mediterranean fever and Crohn's disease. The human immune system is our protector.The first vaccine was developed in the late 18th century, but people recognized the importance of immunity long before that.You often hear that bacteria, viruses and fungi are the cause of disease symptoms, but this is technically incorrect.Your immune system may suffer from lack of sleep

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