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The familiar sounds of your heart are made by the heart's valves as they open and close.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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The horizontal fraction bar was introduced by the Arabs.

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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

A person with a defective "P" gene might only have it effect the Hair A person with a defective "P" gene might only have it effect the Hair
Detecting Emotions in Facial Expressions Detecting Emotions in Facial Expressions
Hand signals are an effective emergency backup to ra- dio communication systems. Shown are several ... Hand signals are an effective emergency backup to ra- dio communication systems. Shown are several ...
Coffee will not sober you up. An intoxicated person who drinks coffee will end up being a stimulated Coffee will not sober you up. An intoxicated person who drinks coffee will end up being a stimulated
Food vs Cash: Which Is More Effective for Alleviating Hunger? Food vs Cash: Which Is More Effective for Alleviating Hunger?
Emotions can influence weight Emotions can influence weight
Video: Mendel's Principles of Dominance, Segregation and Independent Assortment

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