Hiding those red blood cells can double or triple the transparency of glass frogs, Taboada, Delia and colleagues report in the Dec. 23 Science.

About 89 percent of the frogs’ red blood cells had packed themselves into that organ. That made sense: The liver, which filters blood, is a logical destination for red blood cells, he said.

These little tropical frogs have a rare talent: They "hide" nearly 90% of their red blood cells in their livers while sleeping.

Glass frogs can turn on their transparent appearance by hiding 90% of their red blood cells in their liver during sleep, a new study in Science reported Thursday.

Frogs' porous skin is also how they drink. "That water is getting into all those spaces in the skin, and is then being ...

How the frogs’ tissues endure their bizarrely bloodless state for hours at a time is still a mystery. “If I took 89 percent of your blood and put it in your liver at night, you’d probably be ...

Glass frogs can boost their transparency by up to 61 per cent by storing most of their blood in their liver while they sleep. Researchers hope that understanding how the frogs manage to pool their ...

A kind of transparent frog achieves near invisibility by hiding its red blood cells during the day, scientists found. "I had never seen anything like that," researcher Carlos Taboada says.

(CN) — If you’re ever in the rain forests of Colombia, don’t expect to see any glass frogs hanging out; the tiny frogs are masters of camouflage, thanks to their transparent skin. The glass frog, ...

Nation World Glass act: Scientists reveal secrets of frog transparency These little tropical frogs have a rare talent: They "hide" nearly 90% of their red blood cells in their livers while sleeping.

Using light and ultrasound imaging technology, the researchers discovered the secret: While asleep, the frogs concentrate, or “hide,” nearly 90% of their red blood cells in their liver.