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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
Did you know?
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.