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Author Question: After an ultrasound performed at twenty weeks of pregnancy, Melissa finds out that the fetus she is ... (Read 40 times) |
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The average adult has about 21 square feet of skin.
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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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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.