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In 1864, the first barbiturate (barbituric acid) was synthesized.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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The human body produces and destroys 15 million blood cells every second.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.