Lander, Eric, Robert Weinberg, Tyler Jacks, Hazel Sive, Graham Walker, Sallie Chisholm, and Michelle Mischke. 7.01SC Fundamentals of Biology,Fall 2011. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed 25 May, 2013). License: Creative Commons BY-NC-SA

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