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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Diverticula in the sigmoid colon. Diverticulosis is almost always located in the descending or sigmo Diverticula in the sigmoid colon. Diverticulosis is almost always located in the descending or sigmo
Specula: (A) Vienna nasal speculum; (B) Ives-Fanster rectal speculum. Specula: (A) Vienna nasal speculum; (B) Ives-Fanster rectal speculum.
Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ... Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ...
The Schrader valve on this General Motors 3800 V-6 is located next to the fuel-pressure regulator. The Schrader valve on this General Motors 3800 V-6 is located next to the fuel-pressure regulator.
Some of the pathways of the auditory system that lead from one ear to the cortex. Some of the pathways of the auditory system that lead from one ear to the cortex.
Administration of Nasal Medications Administration of Nasal Medications
Video: The Vestibular System

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