Dr. Cameron said he objected to cloning dogs, but not farm animals or laboratory rodents.

The substance appears to be the most powerful cancer-causing agent ever tested in laboratory rodents.

Adult wild-caught specimens are often difficult to maintain in captivity, but captive-born individuals do quite well and feed readily on killed laboratory rodents.

Would a calorically restricted diet work in people as well as it does in laboratory rodents, which live only a couple of years?

Exposure to a predator (such as a cat) elicits defensive behaviors in laboratory rodents, even when the animal has never been exposed to a cat.

Again, the focus was to determine if or if not wheel running can prevent the onset of depression and "anxiety-like behaviours" in the laboratory rodents.

Numerous studies of laboratory rodents provide strong evidence that genetics plays an important role in obesity.

Many of these are naturally occurring pesticides that are carcinogenic when tested in laboratory rodents.

Dioxin has been a major health concern because studies show it may be the most powerful cancer-causing agent ever tested in laboratory rodents.

A type of gene therapy unlike any tried before has proved highly successful in treating brain tumors in laboratory rodents, scientists have found.