“Questions and Answers About Biomedical Research,” Humane Society of the United States, n.d., www.humanesociety.org/issues/biomedical _research/qa/questions_answers.html; “Mice and Rats in Laboratories,” People for the Ethical Treatment of Animals, n.d., www.peta.org/issues/animals-used-for-experimentation/animals-laboratories/mice-rats-laboratories, retrieved August 1, 2016.
