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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.
![Development of an atherosclerotic plaque that progressively narrows the lumen of an artery to the po](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_23_55_8527254.jpeg)
![The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_45_11_208612424.jpeg)