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Fig. 5. Phenotype of pin1 stm double mutants. (A-D) 7-day-old seedlings. (A) Wild type. (B) pin1-6 single mutant. (C) stm single mutant. (D) pin1-6 stm double mutant. (E-H) Seedlings were cleared to visualize the vascular pattern. (E) Wild type. (F) pin1-6 single mutant. (G) stm single mutant. (H) pin1-6 stm double mutant. The vasculature shows a bilateral symmetry in wild type and stm while it is asymmetric in pin1-6. In the double mutant the vasculature shows a radial symmetry. (I-L) Histological sections of the SAM stained with Toluidine Blue. (I) Wild type. (J) pin1-6. (K) stm. (L) pin1-6 stm. Scale bars, 50 µm.