Figure 3.

(a) Species contributing to the main (x) axis of variation shown in Figure 2a, plotted with respect to the microarray hybridization profiles generated from the individual samples. The positional location of the coloured lines represents their relative position along the axis of variation and their association with the listed probe identifiers. Only those probe identifiers that make a statistically significant contribution to the site differentiation are shown. (b) A triangle plot showing the quantitative PCR results produced from the individual samples using group-specific primers. The coloured ellipsoids represent the collective variance for each site, which concurs with the microarray results shown in Figure 2a.