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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
Vaccines prevent between 2.5 and 4 million deaths every year.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.