Benita S. Katzenellenbogen, Swanlund Professor of Physiology and Cell Biology, and Center for Advanced Study Professor, and John A. Katzenellenbogen, Swanlund Professor of Chemistry, have been selected to jointly receive the prestigious Roy O. Greep Lecture Award for 2006 from The Endocrine Society. The award recognizes their work bridging biology and chemistry to advance understanding of nuclear receptors and steroid hormone action in biology and medicine. They have both received numerous awards and honors, including election as Fellows of the American Academy of Arts and Sciences, but this is their first joint award recognizing their research contributions. They will officially receive the award at the 88th Annual Meeting of The Endocrine Society, in Boston in June, where they will present the Plenary Greep Award Lecture on "The Diverse World of Estrogens and Estrogen Actions".