Affiliation: | (1) Laboratory of Plant Molecular Biology, Rockefeller University, 1230 York Avenue, 10021 New York, NY, USA;(2) Present address: Department of Cell Biology, National Institute of Agrobiological Resources, Yatabe, 305 Ibaraki, Japan;(3) Department of Biotechnology, Carlsberg Research Laboratory, Gl. Carlsberg Vej 10, DK-2500 Valby, Copenhagen, Denmark |