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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

The endocrine glands of the endocrine system are distributed throughout the body. The endocrine glands of the endocrine system are distributed throughout the body.
Part A - Overview of the vertebrate nervous system Part A - Overview of the vertebrate nervous system
Limbic system. Limbic system.
The metric system specifies fasteners by diameter, length, and pitch. The metric system specifies fasteners by diameter, length, and pitch.
The Central Nervous System Includes the Brain and Spinal Cord The Central Nervous System Includes the Brain and Spinal Cord
Development of the Digestive System "تطوير الجهاز الهضمي" Development of the Digestive System "تطوير الجهاز الهضمي"
Video: Pressure volume relationships - Normal inspiration and expiration

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