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Structure of two AMT2 transcripts in roots. A, Schematic representation of the putative structure of the two AMT2 transcripts. Black bars indicate parts to the transcripts that were complementary to the antisense riboprobes. B, Northern blot of 20 μg of total RNA from root and leaf tissue of Arabidopsis C24, using riboprobes specific to the 3′ or 5′ part of the AtAMT2 gene.
