Fig. 7. Plasma cortisol concentrations for rainbow trout exposed to control or cadmium exposures of either 2 µg Cd l^–1 waterborne or 3 µg Cd g^–1 dietary (at 1% daily ration) for 7 days, followed by a 2-day depuration period in control water (N7 for each group). Plasma samples were taken 15 min after introduction of either distilled deionized water (DDW control) or skin extract stimuli. * represents a significant difference between fish given DDW stimulus and those given skin extract stimulus within each cadmium (Cd) treatment group (P<0.05). represents a significant difference from Cd-unexposed skin extract control (P<0.05).

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