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Expression levels of the eight OsXTH genes in coleoptiles and leaves. Coleoptiles and first to third leaves were excised separately from 3-to 14-d-old seedlings and subjected to RNA extraction. Transcript levels were determined by quantitative real-time RT–PCR and are shown as the number of RNA molecules in 1 pg of total RNA. Error bars = se based on three replicates of the same sample.
