Scientists have completed a brain cell transplant, combining lab-grown clumps of human brain cells with those of newborn rats. The experiment is disturbing, but there's a good reason behind the move.

In a new study Indiana University researchers observed episodic memory in rats to a degree never documented before, suggesting that rats can serve as a model for complex cognitive processes often ...

A litter of rat pups, exposed to a common “forever chemical” before birth, grew up to act more impulsively and show ...

Add Yahoo as a preferred source to see more of our stories on Google. Wikimedia Commons People predicting the end of world generally make those predictions without scientific evidence to support them.

You've heard the concept of the "rat race," but how about a literal rat, racing through the hallways of Doom? One researcher named Viktor Toth ran an experiment over nearly six months, seeing if he ...

Seven years ago, researchers at Stanford University started an ambitious experiment: They began growing miniature, simplified versions of the human brain from stem cells inside a lab, then later ...

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A semi-functional rat forelimb has been grown in the lab -- and primate limbs are next. A team of regenerative medicine scientists and surgeons at Massachusetts General Hospital (MGH) used a ...

COLUMBIA, S.C. (FOX Carolina) - The University of South Carolina said an experiment involving cocaine-addicted rats being electrically shocked has been stopped for now. In November, the university ...

We use rats and mice, of course, because there are a huge number of experiments that we can’t do on people – to learn the effects of a potentially harmful agent on humans, we have to involve some ...