Take a peek into our microscope for a lesson in stem cell basics! This video is a component of the Pittsburgh Tissue Engineering Iniative-Carnegie Science Center exhibit, "If a Starfish Can Grow a New Arm, Why Can't I?". The exhibit is the result of a Science Education Partnership Award from the National Center for Research Resources of the National Institutes of Health. Come learn more about the exhibt, try your hand at some fun classroom activities and learn where the exhibit might be in your area at http://www.carnegiesciencecenter.org/default.aspx?pageId=422. http://www.carnegiesciencecenter.org/default.aspx?pageId=422