Antioxidant and metabolic responses induced by cadmium and pyrene in the earthworm Eisenia fetida in two different systems: contact and soil tests

Xiang Zhang, Yonglong Lu, Yajuan Shi, Chunli Chen, Zhi Yang, Yedan Li and Yan Feng

Chemistry and Ecology 25 ( 3 ): 205 - 215 , 2009