Does animal testing work?

Last updated at 10:57
Lab technician with a beakerOther

Animal testing has helped to develop vaccines against diseases like measles, rabies and mumps.

Drugs to fight the effects of HIV and cancer rely on animal tests to find new treatments.

Operations on animals have helped to develop organ transplant and open-heart surgery techniques.

But, an animal's response to a drug can be different to a human's and the stress the animals experience in the lab can affect the test results.