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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including
Consecutive segments of the Nephron Consecutive segments of the Nephron
Nephron Structure Nephron Structure
A developing fetus is cushioned in a sac of watery amniotic fluid A developing fetus is cushioned in a sac of watery amniotic fluid
The nephron "النفرون" The nephron "النفرون"
Tubular portion of one nephron, cutaway view. The tubule starts at Bowman’s capsule. Tubular portion of one nephron, cutaway view. The tubule starts at Bowman’s capsule.
Video: Cellular Respiration & Glucose Mobilization (Glucose transport & Phosphorylation of Glucose)

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