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The horizontal fraction bar was introduced by the Arabs.

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Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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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.

An analogy for how cardiac output, resistance, and blood pressure are related. An analogy for how cardiac output, resistance, and blood pressure are related.
Relationship between levels of COHb in blood and concentration of CO in the surrounding air Relationship between levels of COHb in blood and concentration of CO in the surrounding air
The Mesengenic Process in stem cells The Mesengenic Process in stem cells
Noradrenergic Pathways in a Rat Brain Noradrenergic Pathways in a Rat Brain
A summary of terminology describing the structure of sugar molecules A summary of terminology describing the structure of sugar molecules
The Cranial Nerves as They Exit the Base of the Brain The Cranial Nerves as They Exit the Base of the Brain
Video: PET Scan Animation

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