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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.