Affiliation: | aInstitute of Developmental and Molecular Biology and Department of Biology, Texas A&M University, College Station, Texas 77843-3155;bInstitute of Experimental Botany, Academy of Sciences of the Czech Republic, 16502 Prague 6, Czech Republic;cNational Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland 20894 |