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wox4 wox14 double mutants have no vascular organisation defects. (A) Transverse Toluidine Blue-stained sections of vascular tissue from 8-week-old inflorescence stems. (B) Transverse hypocotyl sections. LHS are Toluidine Blue stained; RHS are Analine Blue stained. Arrowheads indicate intercalated xylem and phloem in pxy and pxy wox4. Scales bars: 50 μm.
