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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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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Russian federation stamp illustrating Yuri Gagarin, first human in space Russian federation stamp illustrating Yuri Gagarin, first human in space
20 weeks old human fetus 20 weeks old human fetus
Human Tail Human Tail
Modern Human Fossil Sites in the Old World Modern Human Fossil Sites in the Old World
Essentials of Human Communication (6th Edition) Essentials of Human Communication (6th Edition)
A gene chip carrying the human gene set. This chip can be used to diagnose genetic disorders A gene chip carrying the human gene set. This chip can be used to diagnose genetic disorders
Video: Febrile Seizure

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