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Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Nurse bees tending to brood in cells both open and capped with beeswax. Nurse bees tending to brood in cells both open and capped with beeswax.
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Conjugation of F and F cells Conjugation of F and F cells
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