Affiliation: | 1.Department of Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA;2.Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, Maryland 20742, USA;3.Center for Biosystems Research, University of Maryland Biotechnology Institute, College Park, Maryland 20742, USA;4.Burnham Institute for Medical Research, La Jolla, California 92037, USA |