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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."

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

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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.

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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

A comparison of alloploidy (seen in species hybrids) and new allopolyploid species. A comparison of alloploidy (seen in species hybrids) and new allopolyploid species.
The amino acid sequences of whale myoglobin and the α and β chains of human hemoglobin The amino acid sequences of whale myoglobin and the α and β chains of human hemoglobin
Major glands of the human endocrine system Major glands of the human endocrine system
Psychoactive substances: (left) Psilocybin is obtained from a species of mushroom; (right) LSD is ... Psychoactive substances: (left) Psilocybin is obtained from a species of mushroom; (right) LSD is ...
The relation between the physical and perceptual dimensions of sound. The relation between the physical and perceptual dimensions of sound.
DDT impact on human health DDT impact on human health
Video: Deafness Culture

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