Ask unlimited questions for free
There are approximately 3 million unintended pregnancies in the United States each year.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Asthma cases in Americans are about 75% higher today than they were in 1980.
For a complete list of videos, visit our video library