What do experiments on animals prove?
Many animal experiments are performed to highlight any potentially harmful effects of newly-developed medicines and chemical substances on humans. In some cases, researchers try to mimic conditions affecting humans (e.g. cancer, cystic fibrosis, arthritis, etc.) in the animals they are experimenting on, to see if new medicines will be effective in treating them. The Research Defence Society (a pro-vivisection organisation) claims that inherited diseases such as cystic fibrosis are now being accurately reproduced in specially bred genetically altered laboratory mice.
What follows can be seen as the arguments put forward by people with completely opposing views. The anti-vivisectionists claim that vivisection is outdated, unnecessary, cruel, and produces misleading results. Pro-vivisectionists say that animal experiments are vital to the advancement of medicine, that care is taken to limit the suffering inflicted on animals and that vivisection is the only accurate way to test responses of entire living organisms to chemicals, rather than those of an isolated section of body tissue.