Illicit drug use costs the United States approximately $181 billion every year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
Primary glands of the endocrine system.
The digestive system.
The Central Nervous System
The Female Reproductive System (2 of 2)
Development of the Digestive System "تطوير الجهاز الهضمي"
