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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

The general pattern of progression of an untreated HIV infection The general pattern of progression of an untreated HIV infection
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A guinea pig being examined by a veterinary medical officer for general health and pulmonary conditi A guinea pig being examined by a veterinary medical officer for general health and pulmonary conditi
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The General Process of Sensation The General Process of Sensation
Algebraically determine the general solution, in degrees, of the equation below. Algebraically determine the general solution, in degrees, of the equation below.
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

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