Figure 5From: ARACNe-based inference, using curated microarray data, of Arabidopsis thaliana root transcriptional regulatory networksPhotographs 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.Back to article page