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Levels of GUS transcript and enzyme activity in different transgenic plants. A, Total RNA (10 μg per lane) isolated from transgenic plants with PBI121 (121, positive control), S, T, ST, and P5 was hybridized with DIG-labeled GUS-specific probe. B, The GUS activity in each transgenic plant was determined by GUS fluorometric assay. Bars represent mean ± se of three measurements.
