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Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Electron micrograph of phage T4 Electron micrograph of phage T4
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computer model of the AIDS virus computer model of the AIDS virus
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RNA Virus Life Cycle RNA Virus Life Cycle
Demonstration that recombination between a phage chromosome Demonstration that recombination between a phage chromosome
Video: Oral Hygiene & Braces Animation

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