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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
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.

