| gill and head kidney antioxidant processes and innate immune system responses of yellow perch (perca flavescens) exposed to different contaminants in the st. lawrence river, canada. | biomarkers of oxidative stress metabolism and the innate immune response were examined in gill and head kidney tissue of wild-caught yellow perch (perca flavescens) collected from four sites ranging in type and degree of metal pollution in the st. lawrence river, quebec, canada. sites were ranked as follows: ile dorval<iles aux sables<ilet vert<beauharnois. biomarker measurements did not correspond completely to the perceived pollution gradient. total protein content was highest at a site 4 km d ... | 2009 | 18992921 |