Samples under 50 μM Cu and
50 μM Cu+Pb treatments presented significant decrease of
GR when compared to control. No differences were observed
for treatments with Pb. Interestingly, when exposed to Cu+
Pb, lower concentrations did not show any statistical
differences from control. Otherwise, all treatments with Cu,
both separately and combined with Pb (Cu+Pb), showed lower
means when compared to control.