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Did you know?
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Did you know?
Medication errors are more common among seriously ill patients than with those with minor conditions.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.