Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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There are 60,000 miles of blood vessels in every adult human.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
The hierarchy of forces governing protein structure.
Translational regulation of ferritin mRNA by the iron regulatory protein (IRP)
Protein
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Protein Needs Are Determined by Nitrogen Balance in Your Body