Charles P. Casey, Ph.D. (right), president of the American Chemical Society, presents Chancellor Mark S. Wrighton with a plaque designating the former laboratory of Carl and Gerty Cori as a National Historic Chemical Landmark. The Coris’ lab not only produced the path-breaking discovery of the catalytic conversion of glycogen, the starch-like substance found in muscles and the liver — which earned the couple the 1947 Nobel Prize in physiology or medicine — but it also was the training center where seven subsequent Nobel Prize winners studied.