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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.

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

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

A comparison of selected species of bacteria and archaea. A comparison of selected species of bacteria and archaea.
Evolution of Primate Species Evolution of Primate Species
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A gene chip carrying the human gene set. This chip can be used to diagnose genetic disorders A gene chip carrying the human gene set. This chip can be used to diagnose genetic disorders
Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v
Video: Mendel's pea plant, Pisum sativum experimental

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