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Author Question: Trends in marriage, divorce, and childbearing in Canada show a gradual weakening of the nuclear ... (Read 36 times) |
The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.