Fig. 1

Plot of the linear discriminant analyses for the Raw (a) and Filtered (b) datasets. A projection of the MLGs, for individuals, is shown onto the plane defined by the axes of the discriminant analyses. Groups are depicted as ellipses showing the variance within the groups, each ellipse being centered about its group mean. H, samples from hepatic-portal-vein; L, samples from liver; M, samples from mesenteric blood vessels. The upper sub-plot shows the eigenvalue screeplot representing the contribution of each axis to the variation, and the lower sub-plot the magnitude of the retained eigenvectors