title: Embryotoxic effects of crude oil containing nickel and vanadium in mallards.
mesh_terms: D000818:Animals; D004372:Ducks / Q000196:embryology*; D009532:Nickel / Q000633:toxicity*; D010578:Petroleum / Q000633:toxicity*; D014639:Vanadium / Q000633:toxicity*
chemical_list: D010578:Petroleum; D014639:Vanadium; D009532:Nickel