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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.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
The familiar sounds of your heart are made by the heart's valves as they open and close.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.