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Localization of transcripts of OsCPS1 and OsCPS2 in the second-leaf sheath of rice. (A) The upper and basal parts of the rice second-leaf sheath were used for expression analyses by qRT–PCR. (B) Relative transcript levels of two CPS genes. The concentration of each transcript was normalized to that of 18S rRNA, and adjusted to a value of 1 for OsCPS1 in the basal parts with SEs (n=3).
