Affiliation: | 1. Department of Animal Biology, School of Integrative Biology, University of Illinois, 505 South Goodwin Avenue, , Urbana, IL, 61801 USA;2. Biology Department, Duke University, Box 90338, , Durham, NC, 27708 USA;3. Institute for Genomic Biology, University of Illinois, 1206 West Gregory Avenue, , Urbana, IL, 61801 USA |