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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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).
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

