produced the same types of pathologies, but the severity was different.
For example in the 20 g l−1 treatments, Cu-NPs cause greateralteration in the proportion
of hepatic area and sinusoid space thanCuSO4 after 10 days, but this occurred even
throughtthe livers fromthe Cu-NP treatment showed no statistical increase
of new Cu accumulation in the tissue (Table 1). This suggests, more likely, that