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. 2014 Apr 16;14:97. doi: 10.1186/1471-2229-14-97

Figure 5.

Figure 5

Photographs of wild type (a) and xal1-2 (b) adult root transverse sections observed under UV light. Autofluorescence of lignified tissues is evidenced as a light-blue coloration. White arrows in xal1-2 indicate gaps in the xylem-fiber ring. Bars represent 100 microns.