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The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

The movement of a bolus of food from the mouth to the stomach via the esophagus. The movement of a bolus of food from the mouth to the stomach via the esophagus.
The movement of water and nutrient through a tree The movement of water and nutrient through a tree
The growing demand for electrical power, carbon sequestration and storage must be a priority The growing demand for electrical power, carbon sequestration and storage must be a priority
Normal frequency distribution, characterized by a bell-shaped curve Normal frequency distribution, characterized by a bell-shaped curve
Typical bacterial population growth curve showing the initial lag phase Typical bacterial population growth curve showing the initial lag phase
Movement of Chloroplasts in Response to Light Movement of Chloroplasts in Response to Light
Video: What are Taste Receptors? How Does it Work? Animation

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