In this Oct. 22, 2008, photo, Theresa Gratsch, a Ph.D. research specialist, views nerve cells derived from human embryonic stem cells under a microscope at the University of Michigan Center for Human Embryonic Stem Cell Research Laboratory in Ann Arbor, Mich. Reversing an eight-year-old limit on potentially life-saving science, President Barack Obama lifted restrictions Monday on taxpayer-funded research using embryonic stem cells.
Section:Photo
