Supporters of animal testing have relied on the medical advancements of animal testing to prove that it is necessary in scientific breakthroughs. People pro animal testing argue that animal testing is beneficial because of the “similar body structures like humans in the way they perform many vital functions and basic cell processes are the same in all animals.” (animalresearch.org) The cures of diseases that were discovered because of research of animals in labs would have ceased to exist if animal testing was illegal. The good outcomes outweighs the bad effects of animal testing because of its great impact of the scientific world.