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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Apply effleurage to forehead with thumbs. Stroke from middle of forehead to the temples. Begin just ... Apply effleurage to forehead with thumbs. Stroke from middle of forehead to the temples. Begin just ...
Gently squeeze the tissues along the eyebrow line between your thumb and forefinger. Begin at the ... Gently squeeze the tissues along the eyebrow line between your thumb and forefinger. Begin at the ...
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Biology Forums Home Page Mobile (Feb. 2022) Biology Forums Home Page Mobile (Feb. 2022)
The stress response involves several pathways, which begin with a signaling stimulus The stress response involves several pathways, which begin with a signaling stimulus
Video: Multiple Sclerosis Animation

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