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RNA blot analysis of selected AtPUB-ARM genes. Approximately 20 μg of total RNA isolated from Arabidopsis seedling root (R) and aerial tissues (A) and from mature Arabidopsis flower buds (B), leaves (L), and stems (S) was hybridized to labeled AtPUB-ARM cDNA probes. Blots were then hybridized to a labeled 18S rRNA probe as a control for even loading.
