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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
There are more sensory neurons in the tongue than in any other part of the body.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
There are approximately 3 million unintended pregnancies in the United States each year.
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