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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).