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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
![Positron emission tomography (PET) image showing the difference in the metabolic activity of the bra](https://biology-forums.com/gallery/47/medium_14755_27_08_12_12_14_19_81821620.jpeg)
![Results from sequential study of two cohorts tested at three ages and at three different points in t](https://biology-forums.com/gallery/47/medium_6_31_05_15_8_20_43_219751572.jpeg)