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The polar expression patterns of HD-ZIPIII genes are independent of ATS activity. (a), (c), (e) wild-type Ler ovules; (b), (d), (f) ats-1 mutant ovules; (a), (b) in situ hybridization with antisense PHB probe. (c), (d) in situ hybridization with antisense PHV probe. (e) in situ hybridization with antisense CNA probe. Abbreviations: nucellus (n), inner integument (ii), outer integument (oi).
