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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Mouse Brain Cross Sections Mouse Brain Cross Sections
The trilobite body is divided into three major sections The trilobite body is divided into three major sections
Midsagittal image of the head on an MRI scan Midsagittal image of the head on an MRI scan
A) Sagittal section of the brain; (B) lateral view of the brain. A) Sagittal section of the brain; (B) lateral view of the brain.
CSF Flow - Sagittal section of brain and spinal cord CSF Flow - Sagittal section of brain and spinal cord
Sagittal C T of the Cervical Spine Sagittal C T of the Cervical Spine
Video: Introduction to Pre-eclampsia

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