WORK CITED
http://scarboroughbiology4.pbworks.com/w/page/32343579/Structure%20and%20Function%20of%20Sperm%20Cells
http://www.biology.lifeeasy.org/95/what-is-the-structure-of-a-mature-human-sperm-cell
http://image.slidesharecdn.com/malereproductivesystem-121116191244-phpapp01/95/male-reproductive-system-22-638.jpg?cb=1353093286
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