Efficiency Thiols COX LPO GST Bio liver Bio gills Efficiency 1             Thiols 0.02 1           COX 0.33* 0.21 1         LPO -0.26 0.19 -0.54* 1       GST 0.29 0.11 0.42* -0.11 1     Bio liver -0.07 0.11 0.27 -0.19 0.15 1   Bio gills 0.24 0.12 0.06 0.07 0.02 0.16 1

Table 3: Correlation matrix between biomarkers for both silver treatments andthe type of water. Efficiency=immunoefficiency, thiols=reduced thiols production,COX=cyclooxygenase activity, GST=Glutathione-S-transferase , LPO=Lipidperoxidation, Bio liver=silver bioaccumulation in the fish liver, Bio gills=silverbioaccumulation in the fish gills. * indicated significant results (p < 0.05).