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Author Question: Bill Gates developed the ________ operating system for IBM PCs in 1980. (Read 120 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.
Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
In 1864, the first barbiturate (barbituric acid) was synthesized.