The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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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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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Medication errors are three times higher among children and infants than with adults.
Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th
American Staffordshire Terrier
(A) Normal spongy bone. (B) Spongy bone with osteoporosis, which is characterized by a loss of bone