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Did you know?
The average adult has about 21 square feet of skin.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
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?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%