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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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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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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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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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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.

Liver Transplantation Procedure Liver Transplantation Procedure
The end of a typical line wrench, which shows that it is capable of grasping most of the head of ... The end of a typical line wrench, which shows that it is capable of grasping most of the head of ...
Fuel should be heard returning to the fuel tank at the fuel return line if the fuel pump and ... Fuel should be heard returning to the fuel tank at the fuel return line if the fuel pump and ...
Fuel should be heard returning to the fuel tank at the fuel return line if the fuel-pump and ... Fuel should be heard returning to the fuel tank at the fuel return line if the fuel-pump and ...
How to find the equation of a line that is perpendicular to a line passing through a point How to find the equation of a line that is perpendicular to a line passing through a point
How to find the equation of a line that is perpendicular to a line passing through a point How to find the equation of a line that is perpendicular to a line passing through a point
Video: Introduction to Eating Disorders

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