Institution: | (1) Department of Biochemistry and Molecular Biology, Cummings Life Science Center, University of Chicago, 920 East 58th Street, 60637 Chicago, IL, USA;(2) Present address: Laboratory for Cell, Molecular and Developmental Biology (M/C 066), Department of Biological Sciences, College of Liberal Arts and Sciences, Box 4348, 60680 Chicago, Ill, USA |