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Author Question: Some teratogens are harmless until they reach a certain level of exposure; they then become ... (Read 39 times) |
The average office desk has 400 times more bacteria on it than a toilet.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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).
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.