Richard BEHRINGER is a Professor in the Department of Genetics at the University of Texas M.D. Anderson Cancer Center in Houston, Texas. His research focuses on mammalian developmental genetics, including organogenesis, stem cells, and evolution. Dr. Behringer has also conducted field studies of marsupials on Kangaroo Island in Australia and bats on the Caribbean island of Trinidad. He is an editor of the 3rd and 4th editions of Manipulating the Mouse Embryo: A Laboratory Manual and co-author with Dr. Virginia Papaioannou of Mouse Phenotypes: Generation and Analysis of Mutants: A Laboratory Manual both published by CSHL Press.