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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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.
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The human body produces and destroys 15 million blood cells every second.
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There are more bacteria in your mouth than there are people in the world.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
bio: clinical trials
Order and Duration of Sleep Stages Through a Typical Night
Administrative and Clinical Procedures for the Canadian Health Professional, 4/E