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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 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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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.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

The carbon cycle. Numbers are storage as 1015 g or fluxes as 1015 g per year (data from Schlesinger The carbon cycle. Numbers are storage as 1015 g or fluxes as 1015 g per year (data from Schlesinger
Lake position in the landscape and proportion of water received as groundwater (data from Webster et Lake position in the landscape and proportion of water received as groundwater (data from Webster et
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ... Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
Business Intelligence, Analytics, and Data Science: A Managerial Perspective, 4th Edition Business Intelligence, Analytics, and Data Science: A Managerial Perspective, 4th Edition
Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia). Type III curve. Mortality is highest early in life. Data for a desert shrub (Cleome droserifolia).
Gamete genotype frequencies calculated from genetic linkage data Gamete genotype frequencies calculated from genetic linkage data
Video: Regulation of GFR: three methods, autoregulation & autoregulation via myogenic mechanism

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