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

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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Dinoflagellates of the supergroup Alveolata and their characteristic alveoli. Dinoflagellates of the supergroup Alveolata and their characteristic alveoli.
Hartmann's mountain zebra resting, showing its characteristic essentially unbarred belly Hartmann's mountain zebra resting, showing its characteristic essentially unbarred belly
Cushing’s syndrome. A photograph of a woman with the characteristic facial features of Cushing’s syn Cushing’s syndrome. A photograph of a woman with the characteristic facial features of Cushing’s syn
Gravitational Redshift The color of light from the same object located at diffe Gravitational Redshift The color of light from the same object located at diffe
Object and Word Recognition After Midsegments of Lines Have Been Eliminated Object and Word Recognition After Midsegments of Lines Have Been Eliminated
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Video: Enzyme-Catalyzed Reactions

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