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(A, B) DR5::GUS expression in primary root tips of 6-day-old seedlings of wild-type (A) and transgenic (B) plants. Scale bar, 50 µm. (C, D) DR5::GUS expression in lateral roots of 6-day-old seedlings of wild-type (C) and transgenic (D) plants. Scale bar, 50 µm. (E) Expression of auxin efflux carrier genes in the wild-type and transgenic plants. Ubiquitin (UBQ) was used as an internal control.
