On average, the stomach produces 2 L of hydrochloric acid per day.
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People about to have surgery must tell their health care providers about all supplements they take.
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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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.
Major types of microbial cell shapes.
Life-cycle of the Sun; sizes are not drawn to scale
Complementary shapes of a substrate and its binding site on an enzyme