The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
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There are 20 feet of blood vessels in each square inch of human skin.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
A Glitch Interrupts the Vela Pulsar’s Spindown Rate
Sample Workout in the Target Heart Rate Range
Influence of substrate concentration on the rate of an enzyme-catalyzed reaction.
Factors Affecting the Environmental Lapse Rate (ELR): Heating or Cooling of the Lower Atmosphere