Alfredo Ulloa-Aguirre, M.D., D.Sc. is senior scientist in the Research Center for Population Health at the National Institute of Public Health and Professor ofthe National University of Mexico (UNAM), where he heads the Research Support Network of the National Institutes of Health in Mexico City. He received hisgraduate training in internal medicine and reproductive endocrinology at the National Institute of Medical Sciences and Nutrition SZ and earned the Doctoral degree in Medical Sciences from the UNAM. He received postdoctoral training at the University of Pennsylvania, Philadelphia PA, and has been visiting scientist at the Oregon National Primate Resarch Center, OHSU, Beaverton OR, and the Institut National de la Recherche Agronomique, in Tours, France (Le Studium Scientist). He is currently a member of the Studium Consortium for Research and Training in Reproductive Sciences (sCORTS, Le Studium, Orléans, France). An internationally recognized physician-scientist, Dr Ulloa-Aguirre has developed programmes in both clinical and basic research. His laboratory focuses on the structure-function relationship of gonadotropins and gonadotropin receptors as well as on the gonadotropin-releasing hormone receptor, with particular emphasis on the factors and mechanisms that control intracellular trafficking of these receptors. He is the author or co-author of over 165 research publications and several book chapters.