Exposure to residual concentrations of elements from a remediated coal fly ash spill does not adversely influence stress and immune responses of nestling tree swallows.

Copper, Se and Zn concentrations were not significantly correlated with each other (all r ≤ 0.11, all P ≥ 0.23), but Hg concentrations correlated positively with Cu ( r = 0.27, P = 0.002) and were almost significantly correlated with Se concentrations ( r = 0.16, P = 0.07).

also in 555 other papers