title: Elevation of copper and nickel levels in primaries from black and mallard ducks collected in the Sudbury district, Ontario.
mesh_terms: D000818:Animals; D003300:Copper / Q000032:analysis*; D004372:Ducks / Q000378:metabolism*; D005241:Feathers / Q000032:analysis*; D005260:Female; D008297:Male; D009532:Nickel / Q000032:analysis*; D009864:Ontario
chemical_list: D003300:Copper; D009532:Nickel