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The immune system of human body can keep human health from disease, but for many people, the immune system is the cause of disease. When the autoimmune system is in disorder, healthy cells and tissues will be killed as viruses, which will lead to a variety of immune system diseases. Recently, scientists in the United States have discovered the genome that ...


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One way to identify mechanisms by which the body tames the microbes in the mouth is to observe what happens when those mechanisms are impaired: Deviation from symbiosis among the bacterial community leads to “dysbiosis”, a state of community disturbance. Dysbiosis occurs due to many confounding factors that predispose a shift in the composition and ...


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It's common for the reservoir host of a zoonotic virus to be tolerant of it. MERS coronavirus appears to cause mild or no disease in dromedary camels ( source ), but kills about 35% of confirmed infected humans. ( CDC ) Sin Nombre hantavirus seems to be mild in the deer mice that spread it, despite ~36% fatality rate in humans. ( source ) Mosquitoes are ...


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It's been tentatively proposed that bats are often unusually able to tolerate long-term infection with a wide range of viruses (though this hasn't been formally shown to be true). A specific cause for this (possible) phenomenon isn't known, but many possible explanations have been put forward. It's likely that if it's true, there's no single cause but rather ...


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