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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

These young children are taking the initiative to explore their environment as they examine a snail These young children are taking the initiative to explore their environment as they examine a snail
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Essential Environment Essential Environment
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Video: Embryonic development - Week 3

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