If intelligence is the criteria, then an awful lot of us in this room would be used as test animals!

Its behavior in test animals showed significant differences also.

The mixture was to be such that the test animal would die after four days.

The Columbia will carry seven astronauts and more than 2,500 test animals.

The test animals we had placed on the island were all dead, of course.

"Little Albert" had no fear of the laboratory's test animals.

Some chemicals might have activity against cancer cells in test animals.

Now I know what the test animals must feel like.

We were the "test animals" they used for their own purposes.

He was one of the first test animals that we sent back.