title: Mallard egg quality: enhancement by low levels of petroleum and chlorinated hydrocarbons.
mesh_terms: D000818:Animals; D004372:Ducks / Q000502:physiology*; D004531:Eggs / Q000032:analysis; D005260:Female; D006843:Hydrocarbons, Chlorinated / Q000494:pharmacology*; D010578:Petroleum; D012098:Reproduction / Q000187:drug effects
chemical_list: D006843:Hydrocarbons, Chlorinated; D010578:Petroleum