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Fig. 1. Normal morphology and intact cell identities of the mature embryo sac in
a SET2030 ovule. (A) Mature embryo sac with four cell types: two
synergids, one egg cell and one central cell. (B-F) GUS
expression of marker lines for specific cell types of glc embryo sacs
in mature ovules. Central cell marker lines are FIS2::GUS (B) and
MEA::GUS (C), egg cell marker lines are ET1086 (D) and
ET1119 (E), and the synergid cell marker line is ET2634 (F). ccn, central cell
nucleus; ecn, egg cell nucleus; scn, synergid cell nuclei. Scale bars: 50
µm.