Correspondence analysis of relative synonymous codon usage for Mycobacterium tuberculosis genes:

	% variability Axis 1 7.9 Axis 2 5.5 Axis 3 4.4 Axis 4 3.5 Axis 5 3.5 Axis 6 3.3
Red (), blue () and green squares () correspond to genes proposed as being acquired by HGT and included in regions with a low, high and non-deviated G+C content, respectively. Yellow cross diagonals (x) correspond to putative highly expressed genes.
Correlation values between main axis in correspondence analysis and different parameters. See the Abbreviations used:   %G+C1 %G+C2 %G+C3 %G+CT Nc P2 X2 ICDI Axis 1 -0.1 0.2 -0.9 -0.4 0.5 -0.4 -0.5 -0.6 Axis 2 0.0 0.0 0.2 0.1 0.0 -0.2 -0.0 0.0