Pro to the question "Should Animals Be Used for Scientific or Commercial Testing?"
"Animals are used in research when there is a need to find out what happens in the whole, living body, which is far more complex than the sum of its parts. It is difficult, and in most cases simply not yet possible, to replace the use of living animals in research with alternative methods...
Humans and animals share hundreds of illnesses, and consequently animals can act as models for the study of human illness. For example, rabbits suffer from atherosclerosis (hardening of the arteries), as well as diseases such as emphysema, and birth defects such as spina bifida. Dogs suffer from cancer, diabetes, cataracts, ulcers and bleeding disorders such as haemophilia, which make them natural candidates for research into these disorders. Cats suffer from some of the same visual impairments as humans...
New medicines require testing because researchers must measure both the beneficial and the harmful effects of a compound on a whole organism. A medicine is initially tested in vitro using tissues and isolated organs, but legally and ethically it must also be tested in a suitable animal model before clinical trials in humans can take place."
"Why Animals Are Used," animalresearch.info (accessed Oct. 24, 2013)
Organizations/VIPs/Others Individuals and organizations that do not fit into the other star categories.
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Science is a process, and sometimes there are competing theories - this is not the place where they do battle. This site gives the consensus opinion. If there is not yet consensus then those mainstream theories with the most supporting evidence are considered, and their flaws noted."
"AnimalResearch.info aims to provide reliable, detailed information about when and why it is appropriate to use animals, and the history of this area of research. An international collaboration of scientists and expert contributors provide source information about the contribution of animals to scientific advances, and the rationale for why they are used."