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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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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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Thyroid conditions may make getting pregnant impossible.

Client on IV patient-controlled analgesia (PCA). Client on IV patient-controlled analgesia (PCA).
Neural control of hormone release from the hypothalamus. Neural control of hormone release from the hypothalamus.
A variable valve timing solenoid being controlled by applying voltage from the PCM. A variable valve timing solenoid being controlled by applying voltage from the PCM.
Hypothalamus and Pituitary Gland Hypothalamus and Pituitary Gland
Anterior & Posterior View of Upper Limb (Extremity) Anterior & Posterior View of Upper Limb (Extremity)
Anterior & posterior of patella (kneecap) Anterior & posterior of patella (kneecap)
Video: Origin of organelles Animation

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