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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

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Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

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Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Letters and Numbers Letters and Numbers
Subtle Differences in Written Words Subtle Differences in Written Words
Humans have 23 pairs of chromosomes, containing 3 billion “letters” in the DNA code and about ... Humans have 23 pairs of chromosomes, containing 3 billion “letters” in the DNA code and about ...
Common Root Words and Combining Forms Cont. Common Root Words and Combining Forms Cont.
If P(x,- 3/7) on the unit circle,x can be written as ± r sqrt s / t , r is ≠ 1. The value of ... If P(x,- 3/7) on the unit circle,x can be written as ± r sqrt s / t , r is ≠ 1. The value of ...
Describe the Conceptual Forecasting Framework in your own words. Describe the Conceptual Forecasting Framework in your own words.
Video: Methods of carbon dioxide transport - carbaminohemoglobin and bicarbonate ions

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