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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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The average adult has about 21 square feet of skin.

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