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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.