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Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.