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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including Defences against herbivory. Plants possess an array of unusual and powerful chemicals, including
Nurses possess a wide variety of experiences which they take into each patient encounter. Nurses possess a wide variety of experiences which they take into each patient encounter.
All living apes possess rotating, suspensory shoulders, including humans. All living apes possess rotating, suspensory shoulders, including humans.
Evolutionary Tree for Chordates Evolutionary Tree for Chordates
Video: Role of transport in a cell

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