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Did you know?
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.
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.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.