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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?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.