Fig. 1. GFP spot numbers in living guard cell nuclei (2C) from cotyledons of dexamethasone-treated transgenic Arabidopsis seedlings. (A) Percentage of nuclei with 0, 1, 2, 3 and 4 spots in hemizygous EL702C plants (n=92), homozygous EL702C plants (n=197) and homozygous EL700S plants (n=56). (B) Representative images of nuclei with 0, 1, 2, 3 and 4 spots from each of the lines and schematic view of the lac operator array loci on chromosome 3 in each line.