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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?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.