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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.
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.