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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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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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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.

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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Listening to loud music with headphones or at rock concerts is a frequent cause of hearing loss amon Listening to loud music with headphones or at rock concerts is a frequent cause of hearing loss amon
Purse cover, from the Sutton Hoo burial ship. Purse cover, from the Sutton Hoo burial ship.
Mechanisms of Active and Passive Immunity Mechanisms of Active and Passive Immunity
Apply passive touch over abdomen to finish. Slow the circle stroke you performed in Step 14, and let ... Apply passive touch over abdomen to finish. Slow the circle stroke you performed in Step 14, and let ...
Apply passive touch on the shoulder and hip. Stand in back and place one hand on the shoulder and ... Apply passive touch on the shoulder and hip. Stand in back and place one hand on the shoulder and ...
Embryonic development of shepherd’s purse (Capsella), a eudicot Embryonic development of shepherd’s purse (Capsella), a eudicot
Video: Interspecific Competition Relationship - Competitive & Niche Differentiation

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