References
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Mallery, C. (2008, Feb 11). The cell theory. Retrieved from http://fig.cox.miami.edu/~cmallery/150/unity/cell.text.htm
Tavassoli, M. (n. d.). The cell theory: A foundation to the edifice of biology. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1903404/?tool=pmcentrez
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