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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

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If you could remove all of your skin, it would weigh up to 5 pounds.

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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

A photograph of a woman with exophthalmos. This condition is associated with hypersecretion of the t A photograph of a woman with exophthalmos. This condition is associated with hypersecretion of the t
Diabetes mellitus. The metabolic disease diabetes mellitus, with symptoms of polydipsia, polyuria, a Diabetes mellitus. The metabolic disease diabetes mellitus, with symptoms of polydipsia, polyuria, a
Exocrine gland Exocrine gland
Association of Different HLA Alleles and Increased Susceptibility to Autoimmune Diseases Association of Different HLA Alleles and Increased Susceptibility to Autoimmune Diseases
Retina, Melotonin, Pineal Gland Retina, Melotonin, Pineal Gland
Thyroid Gland Thyroid Gland
Video: Muscle Twitch and Muscle Tension - Motor unit size and force

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