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Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

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

Adult European beewolf (Philanthus triangulum) feeding on nectar Adult European beewolf (Philanthus triangulum) feeding on nectar
To examine a child’s ear, the pinna should be pulled back and up for children over 3 years; the pinn To examine a child’s ear, the pinna should be pulled back and up for children over 3 years; the pinn
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Everyday situations sometimes present opportunities for children to build information processing ... Everyday situations sometimes present opportunities for children to build information processing ...
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Video: Pores and Ion Channels

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