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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Did you know?
The FDA recognizes 118 routes of administration.
Did you know?
Medication errors are three times higher among children and infants than with adults.
Did you know?
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.