Figure 4From: Antisense transcripts with rice full-length cDNAsCumulative frequency distribution of the expression intensities of 21,928 rice transcriptional units (black line) and 258 bidirectional transcript pairs on the microarray (gray line). Signal intensity (x-axis) is plotted against the number of mRNAs with that signal intensity (bars) and also against the normalized cumulative frequency (lines).Back to article page