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Real-time quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) analysis of the BR-related marker genes, DWF4 and CPD, in the wide-type (WS2), bri1-5 mutant and three transgenic lines (Line 1, 6 and 9). The relative expression levels are normalized to AtACTIN2 (GenBank accession No. AT3G18780). The data represents the mean ± SD of three independent experiments. The asterisks indicate significant differences compared to the bri1-5 mutant (**, p < 0.01 by the t-test).
