Reports on the human health effects of environmental pollution of the Great Lakes. Contents: biomarkers for priority contaminants: halogenated aromatic hydrocarbons; approaches to the evaluation of chemical-induced immunotoxicity; immunotoxicity of heavy metals; immunotoxicity of PCBs; immunological effects of chlorinated dibenzo-p-dioxins; pesticide-induced immunotoxicity; reproductive toxicology of Great Lakes contaminants; neurotoxicity of lead, methylmercury, & PCBs; radionuclides in the Great Lakes basin; & dermal exposure to environmental contaminants in the Great Lakes. Charts & tables.