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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.