A-Z of medical conditions

5.4 near stomach, 7.5 near colon. 6.8–7.3 The human gastrointestinal tract (GI tract) normally contains more than five hundred different species of bacteria. Many species found in one part of the GI tract are totally absent in another. A student concludes that few, if any, of the bacteria from the stomach could survive in the colon. ................
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