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Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Pyruvate oxidation results in three changes to pyruvate: Pyruvate oxidation results in three changes to pyruvate:
Common skin signs are often evidence of an illness or disorder. A pustule is a small, elevated, ... Common skin signs are often evidence of an illness or disorder. A pustule is a small, elevated, ...
Influence of substrate concentration on the rate of an enzyme-catalyzed reaction. Influence of substrate concentration on the rate of an enzyme-catalyzed reaction.
Agonists, partial agonists, and antagonists: (a) An agonist results in maximum response. (b) A ... Agonists, partial agonists, and antagonists: (a) An agonist results in maximum response. (b) A ...
Reaction at constant-volume Reaction at constant-volume
phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa phylogenetic results using the TCF7L2 transcripting mRNA sequence for the 4 listed taxa
Video: Cleavage and Implantation Animation

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