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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.