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Scientists discover a sixth sense on the tongue—for water | Science | AAAS

New study in mice sheds light on how animals stay hydrated

Viewed under a microscope, your tongue is an alien landscape, studded by fringed and bumpy buds that sense five basic tastes: salty, sour, sweet, bitter, and umami. But mammalian taste buds may have an additional sixth sense—for water, a new study suggests. The finding could help explain how animals can tell water from other fluids, and it adds new fodder to a centuries-old debate: Does water have a taste of its own, or is it a mere vehicle for other flavors?

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Source: Scientists discover a sixth sense on the tongue—for water | Science | AAAS

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