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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.
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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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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.
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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
Active Compared with Passive Voice
The lower intake manifold attaches to the cylinder heads.
Passive shoulder roll. Place one hand on the anterior and the other on the posterior shoulder. ...
Passive touch on shoulders to end. Hold for 5 to 10 seconds.
Elderly/ grandparents listening to music
The following sentence is written in the passive voice: The man rode his skateboard to work ...