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Rebecca Ram (2015,April). Example of which have failed after being considered successful in animal tests.
Vijay Shankar Balakrishnan (2018, February) "What is the future of animal testing?"
http://www.dw.com/en/what-is-the-future-of-animal-testing/a-42488737
David Grimm (2018, 7 February) "Are happy lab animals better for science?"
http://www.sciencemag.org/news/2018/02/are-happy-lab-animals-better-science
Shawn Radcliffe (2018, 8 February) "What Would happen if Monkeys weren't used in Research?"
http///www.healthline.com/health-news/what-would-happen-if-monkeys-weren't-used-in-
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