1 Rowan, A.N. Of Mice, Models, & Men: A Critical Evaluation of Animal Research (Albany: State University of New York Press, 1984).
2 Branna, Tom, "Animal Testing Alternatives: Moving Closer to Validation?" happi, February 1995.
3 Ibid. 4 Federal Register, Vol. 49, No. 105.
5 Ahrens, Frank, "Why Is This Rat Smiling?" The Washington Post, August 17, 1995.
fuente: http://www.petaenespanol.com/cmp/viv2.html
