More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
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There are more bacteria in your mouth than there are people in the world.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
Number of lower molar cusps is one of the features used to distinguish sundadonts from sinodonts.
Weak Acids and Weak Bases
Nucleic acid bases can exist in syn or anti conformations
A sampling of the modified and unusual bases found in tRNAs
Acids, Bases, & Salts
The pH scale: Acids, Bases, and Buffers and Body Fluids in Flux