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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
The grand opening of the huge Miraflores lock on the Panama Canal in October, 1914. The locks were b
Faith Ringgold, God Bless America, No. 13 from the series American People.
Parenting Styles Reported by a Representative Sample of American Adolescents
Maintaining Weight Loss
Allis’ sign—demonstration of unequal knee height