About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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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.
Glycine Molecule
Hillig and Mahlberg's analysis of secondary metabolites in the genus Cannabis
Secondary meristems generate wood and bark.
Hormones and secondary sex characteristics
As with smoking, drinking alcohol during pregnancy exposes the fetus to potentially toxic substances
Patterns of tissue injury secondary to gunshot wounds.