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The horizontal fraction bar was introduced by the Arabs.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

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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.

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Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

M. tuberculosis M. tuberculosis
brain brain
Long-tailed Widowbird Long-tailed Widowbird
Action of Hunger Signals on Feeding Circuits in the Brain Action of Hunger Signals on Feeding Circuits in the Brain
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ... A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...
Opener A colorized cross section of the human brain Opener A colorized cross section of the human brain
Video: Mendel's pea plant, Pisum sativum experimental

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