1. Reproductive Biology Unit (J.-M.K., B.K.T.), Departments of Obstetrics & Gynecology and Cellular & Molecular Medicine, University of Ottawa; and the Hormones, Ottawa, Ontario, Canada K1Y 4E9
2. Growth and Development Unit, Loeb Health Research Institute (J.-M.K., B.K.T.), Ottawa, Ontario, Canada K1Y 4E9
3. Department of Biology (Y.-D.Y.), College of Natural Sciences, Hanyang University, Seoul 133–791, Korea