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| | Bacteria in the human body - Facts, Information, and Encyclopedia Reference article |
 | | Overall, there are about ten times as many bacteria as human cells in the body, 1 quadrillion (10 |
 | | Though normal flora are found on all surfaces exposed to the environment (on the skin and eyes, in the mouth, nose, small intestine, and colon), the vast majority of bacteria live in the large intestine. |
 | | The same bacteria also secrete acids that dissolve the tooth enamel, causing tooth decay. |
| www.startsurfing.com /encyclopedia/b/a/c/Bacteria_in_the_human_body.html (327 words) |
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