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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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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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The human body produces and destroys 15 million blood cells every second.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Mixing bacterial genotypes produces rare recombinants Mixing bacterial genotypes produces rare recombinants
The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue
Moderate to high physical activity in PE classes is one component of a successful prevention effort ... Moderate to high physical activity in PE classes is one component of a successful prevention effort ...
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Innate Defenses Innate Defenses
Group defenses: Cluster of sawfly caterpillars regurgitating fluid (yellow) that predators find unap Group defenses: Cluster of sawfly caterpillars regurgitating fluid (yellow) that predators find unap
Video: X chromosome inactivation in calico cats

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