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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

The function of a ligand-gated ion channel The function of a ligand-gated ion channel
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
How to combine and sketch transformations of a sinusoidal function (Question 1) (y=a*sin⁡b(x−c)+d) How to combine and sketch transformations of a sinusoidal function (Question 1) (y=a*sin⁡b(x−c)+d)
Testing motor function of cranial nerve VII - Smile Testing motor function of cranial nerve VII - Smile
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Video: Embryonic development - Week 3

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