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Avian species, through their trophic relationships, may represent ideal indicators for assessing environmental health. In this study several assays of immune function in young passerines are validated and compared. From 6 to 10 days of age, zebra finch nestlings (Taeniopygia guttata) were given daily oral doses of Oil Sands tailings water (CT), an immunosuppressant dexamethasone, or phosphate-buffered...
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