Fig. 8. Time course analysis of (A) branchial high affinity Ca²⁺-ATPase activity in adult rainbow trout, and (B) branchial lead accumulation, and (C) plot of high-affinity Ca²⁺-ATPase activity versus branchial lead accumulation in rainbow trout exposed to control conditions and to 5.5±0.4 µmol l^-1 dissolved lead for 3 h, 24 h and 96 h. Values are means ± 1 S.E.M. (N=6). ^*Significant difference (P<0.05; one-way ANOVA with Dunnett's post-hoc multiple comparison) from control sampling mean.