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Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Examples of hydrogen bonds and DNA Examples of hydrogen bonds and DNA
Detail of the Chinese-style gate of Nishi Hongan-ji in Kyoto; Momoyama period; National Treasure Detail of the Chinese-style gate of Nishi Hongan-ji in Kyoto; Momoyama period; National Treasure
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Video: Bone cells and tissues - tissue composition and cells

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