HAROLD AMOS (1919– ) is the Maude and Lilian Presley Professor of microbiology and molecular genetics (emeritus) at the Harvard Medical School, where he has served on the faculty since 1954. His primary research area, hexose metabolism in mammalian cells, is essential to the understanding and treatment of diseases such as diabetes and some forms of immune deficiency. Dr. Amos was a Fulbright Scholar in 1951 and received the Dr. Charles Drew World Medical Prize in 1989. He is a fellow of the American Academy of Arts and Sciences and in 1991 was elected a fellow of the American Association for the Advancement of Science and a member of the Institute of Medicine. Dr. Amos was also awarded the Public Welfare medal of the National Academy of Sciences in 1995 and an honorary degree by Harvard University in 1996.