The immune system is composed of special body organs, cells and chemicals that battle infection. The main components of the immune system are: white blood cells, antibodies, the enhance system, the lymphatic system, the spleen, the thymus, and the bone marrow. The immune system keeps a record of every microbe it has ever before defeated, in types of leukocyte called memory cells. Some infections, like the influenza and the acute rhinitis, have to be dealt with lot of times because numerous different viruses or strains of the same type of virus can cause these ailments. Capturing a cold or flu from one virus does not give you immunity against the others.
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