Immune System Response Paper

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As stated before, the immune system protects the body from infection by identifying and destroying bacteria, viruses, and other harmful substances. Researchers believe bacteria or viruses can mistakenly trigger the immune system to attack the inner lining of the large intestine. This immune system response causes the inflammation, leading to symptoms of ulceration. In other words, the bacteria that usually in habit the intestinal wall are mistaken as a threat (Moscou & Snipe 2013, p.437).
As stated in a book titled Medical Therapy of Ulcerative Colitis (ed. Lichtenstein 2014),a study by Broberger and Perlmann (1959) found that leukocytes in a ulcerative colitis patient had a cytotoxic effect on colon cells in tissue culture. In other words,

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