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Author Question: Tower karst is most common in: a. high latitudes. b. humid midlatitudes. c. humid tropics. d. ... (Read 94 times) |
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
Cyanide works by making the human body unable to use oxygen.
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.