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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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Horns and antlers in mammals
Female Wood Duck at Crystal Springs Rhododendron Garden, Oregon, U.S.
The Redhead (Aythya americana) is a medium-sized diving duck
The skulls of living haplorhines differ from those of strepsirhines by having large brains, an enclo