Since the beginning of time animals have been sacrificed for the good of humanity from the traditional form of the altar to the laboratory table. The morality of animal testing is increasingly being questioned, becoming a hot topic in the media. Where does it say that since humans can express degrees of pain, it is right to test on animals instead? Both humans and animals are not only genetically similar but also structurally similar, but animals also react differently to diseases. Animals are tested because humans have a superior feeling towards them because they are able to communicate and appear different. Animals are unable to express pain in the same way as humans and are therefore seen as unequal. The morality of animal testing boils down to the question of whether it is right to make an animal feel pain and put it on the brink of death for the benefit of another species. Animals are tested not only for medical but also cosmetic purposes. The amount of animals sacrificed to obtain a promising test result varies by the type of test performed and the consequences. The animals were chosen to be experimented on because of their resemblance to humans. The nervous, immune and circulatory systems are all extremely similar to humans. Elizabeth Cooney, a researcher in this field, said: “Most of the gene expression patterns – conservatively estimated at 80% – were the same in mice and humans,” supporting a common consensus in the scientific community (Cooney) . For years, scientists have argued that animal testing is the best way to obtain results in the treatment of diseases such as cancer. But is there really any truth to this? The most common test subjects are mice. The similarity with humans and animals can only go... to the center of the paper... of "Alternatives to animal testing". PETA. PETA. 2013. Web. December 14, 2013. “Animals Used in Research.” AAVS. The American society against vivisection. 2013. Web. 14 December 2013. .Cooney, Elizabeth. “Comparison of the immune systems of mice and humans.” Harvard Medical School. The president and members of Harvard College. 1 April 2013. Web. 14 December 2013. .Hepworth, Adam. "Animal research: the ethics of Aniaml experimentation". HOPES. Stefania Liou. July 6, 2010. Web. December 14, 2013. .JB. “Animal Testing: Why It Is Morally Offensive.” Animal Liberation Front. Anna Berlin. November 13, 2006. Web. December 14, 2013. .PETA. “At the stake”. PETA. PETA. 2013. Web. 14 December 2013. .Singer, Peter. Animal Liberation. Princeton: HarperCollins, 1975. Print.