This chemical has been found to be toxic in experiments on mice.

Studies on mice showed that the plant reduced their fertility.

It has been tested on mice and found to be five times more potent than the former version.

Testing it on mice has been found to be effective, with no side effects.

Tests have already been carried out on mice in Cambridge.

It's also true that all the good studies were done on rats, mice, and worms.

Deer ticks actually spend the first part of their lives on mice.

As of now, this method is currently being used on mice.

Tests were done on mice to see if any of the substances causes cancer.

The tests were only done on mice, not people.