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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.