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Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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There are more sensory neurons in the tongue than in any other part of the body.

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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Technique of Direct Percussion Technique of Direct Percussion
External Obliques External Obliques
One way to illustrate the journey of adulthood is with the image of a mountain landscape. One begins ... One way to illustrate the journey of adulthood is with the image of a mountain landscape. One begins ...
The 2-deoxyglucose technique. The accumulation of radioactivity is shown in three frontal sections ... The 2-deoxyglucose technique. The accumulation of radioactivity is shown in three frontal sections ...
Four cutaneous receptors that occur in human skin. Four cutaneous receptors that occur in human skin.
Transillumination of the maxillary sinuses using alternate technique Transillumination of the maxillary sinuses using alternate technique
Video: Genetic distance between human groups

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