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Did you know?

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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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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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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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Electron micrographs of a cellular membrane. Electron micrographs of a cellular membrane.
The calcaneus spur found on the male's hind limb is used to deliver venom. The calcaneus spur found on the male's hind limb is used to deliver venom.
Types of tissue in the human body. Types of tissue in the human body.
Regulation of membrane phospholipid composition in bacteria Regulation of membrane phospholipid composition in bacteria
General Characteristics of Muscular Tissue General Characteristics of Muscular Tissue
Resting Membrane Potential: Voltage Difference Resting Membrane Potential: Voltage Difference
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