Professor Jonathan L. Sessler obtained a Ph.D. Stanford University in 1982 under the aegis of Prof. J. P. Collman). After postdoctoral work with Profs. Jean-Marie Lehn and Iwao Tabushi, he accepted a faculty position at the University of Texas at Austin, where is currently the Roland K. Pettit Professor of Chemistry. Dr. Sessler is a co-founder (with Dr. Richard A. Miller) of Pharmacyclics, Inc., a publicly traded company dedicated to developing biomedical applications of expanded porphyrins. Thomas McMurry has been part of the scientific management team at EPIX Pharmaceuticals since it initiated operations in 1993 and is currently Vice President, Research. Prior to joining EPIX, he was a Senior Staff Fellow in Radiation Oncology at the National Cancer Institute in Bethesda, Maryland, and a postdoctoral associate at the University of California, Berkeley. Stephen J. Lippard is the Arthur Amos Noyes Professor and Head of the Chemistry Department at the Massachusetts Institute of Technology. A member of the National Academy of Sciences and its Institute of Medicine, his laboratory works at the interface of inorganic chemistry and biology. Included are studies of platinum anticancer drugs, non-heme diiron centers, and probes to investigate neurochemical signaling by zinc and nitric oxide. He is co-author with Jeremy M. Berg of the book "Principles of Bioinorganic Chemistry. Susan R. Doctrow, Ph.D., as Vice President, Research at Eukarion, Inc., has been developing synthetic SOD/catalase mimetics as potential treatments for a broad range of diseases including neurodegenerative disorders. Previously, she was employed at Alkermes, Inc. and as Instructor in Biochemistry (Department of Surgery) at Harvard Medical School. Dr. Doctrow has a Ph.D. in Biochemistry from Brandeis University and conducted postdoctoral research at Children's Hospital, Boston.