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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.