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Blue light-induced change of mRNA expression of the GA2ox genes. Six-day-old etiolated wild-type or cry1cry2 mutant seedlings were exposed to 100 μmol m−2 s−1 blue light, and samples were collected at the time points indicated for RNA analyses. Levels of mRNA expression are shown as the RT-PCR gel images (A) and the relative signal intensities (B).
