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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?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").