Works Cited

                                  All about epithelial cells
"Epithelial Cells." Introduction. N.p., n.d. Web. 31 Aug. 2015.
http://www.bio.davidson.edu/bernd/Lab/EpithelialInfoWeb/index.html
"School of Life Sciences | Ask A Biologist." Epithelial Cells. N.p., n.d. Web. 31 Aug. 2015.https://askabiologist.asu.edu/epithelial-cells