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Fig. 8. REV, CNA and PHB expression patterns in wild-type and jba-1D seedlings. In situ localization of (A,B) REV, (C,D) CNA, and (E,F) PHB mRNA in longitudinal sections through 9-day-old seedlings. (A) Wild-type and (B) jba-1D seedlings showing REV expression in the central zone of the SAM, the adaxial regions of leaf primordia and the vascular tissues. (C) Wild-type seedling showing CNA expression in the central, interior cells of the SAM, the adaxial region of leaf primordia, and the vascular tissues. (D) In jba-1D seedlings, CNA is expressed at a low level in the adaxial region of initiating leaf primordia (arrow). CNA transcripts were not detected in the center of the SAM or in the vascular tissues. (E) Wild-type seedling showing PHB expression in the SAM, the adaxial region of leaf primordia, and the vascular tissues. (F) In jba-1D seedlings, PHB is expressed in the adaxial region of initiating leaf primordia (right arrow) and at a low level in the vascular tissues (left arrow). PHB transcripts were not detected in the SAM proper. For each probe, tissues from wild-type and jba-1D seedlings were analyzed on the same slide. Scale bars: 80 µm.

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