Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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There are approximately 3 million unintended pregnancies in the United States each year.
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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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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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Excessive alcohol use costs the country approximately $235 billion every year.
Eye Color Is a Sex-Linked Trait in Drosophila (Part 4)
Red-Green Color Blindness Is a Sex-Linked Trait in Humans
Deimos in color on February 21, 2009 by the same (not to scale)