Researchers have developed a "blood vessel-on-a-chip" for heart disease with the potential to change the future of drug testing and development. The technology could also reduce our reliance on animal ...

Glass frogs have the rare ability to turn on and off their nearly transparent appearance, researchers report Thursday in the journal Science. Ernesto Benavides/Getty Images See more of our coverage in ...

Glassfrogs got their name because their bellies are as see-through as Cinderella’s slipper. From below, you can even see their internal organs and bones. This may not sound like the best strategy to ...

Why isn't your body transparent? Some animals such as jellyfish, zebra fish and some glass frogs have see-through bodies. But most mammals, including humans, aren't transparent. While the idea of a ...

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 ...

DURHAM, N.C. -- Glassfrogs make themselves transparent while they rest by taking red blood cells from circulation and concealing them in their livers. A multi-disciplinary team of biologists and ...

When a glassfrog falls asleep, it vanishes. Nestled atop a lush leaf, the frog's bright green back blends right in, while its underbelly's reddish hue quickly grows transparent. "If you really want to ...