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Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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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.

Renzo Piano Building Workshop, Aerial view of Kansai International Airport, Osaka, Japan. Renzo Piano Building Workshop, Aerial view of Kansai International Airport, Osaka, Japan.
Peptide Arrays - light-directed, spatially patterned oligopeptide synthesis Peptide Arrays - light-directed, spatially patterned oligopeptide synthesis
Food Sources Milk and yogurt Food Sources Milk and yogurt
International space station International space station
Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources
Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources
Video: PET Scan Animation

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