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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.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

A, Unequal pupils; B, dilated, fixed pupils. A, Unequal pupils; B, dilated, fixed pupils.
An example of a corrected chart notation. An example of a corrected chart notation.
How Much Is Enough? The Explosion In The Number of U.S. Prisoners How Much Is Enough? The Explosion In The Number of U.S. Prisoners
A ring link network reduces the number of wires it takes to interconnect all of the modules. A ring link network reduces the number of wires it takes to interconnect all of the modules.
Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ... Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ...
The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ... The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ...
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