21 Histopathological Alterations of the Mantle of Mytilus galloprovincialis. . .
245
Fig. 21.4 Multivariate analysis. (a) PCA analysis of neoplastic disorders and pollutants (PAHs,
dioxin-like PCBs, Zn and Cd), overlaying a cluster aggregation of samples. (b) Cluster aggregation
and distances between samples