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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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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.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Transduction of a sensory stimulus of two different intensities. Transduction of a sensory stimulus of two different intensities.
Aristolochic acid (AA), a component of birthwort,a plant used in herbal remedies since ancient times Aristolochic acid (AA), a component of birthwort,a plant used in herbal remedies since ancient times
Lilly Martin Spenser’s painting, Domestic Happiness (1844), reflects the change in attitudes toward Lilly Martin Spenser’s painting, Domestic Happiness (1844), reflects the change in attitudes toward
Proteins play an important role in keeping your skin healthy and your nails strong Proteins play an important role in keeping your skin healthy and your nails strong
Classification of Sensory Receptors Classification of Sensory Receptors
Sensory Crossover Device for Visually Impaired People Sensory Crossover Device for Visually Impaired People
Video: Automated external defibrillator (AED)

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