title: Ozone-friendly chemicals.
mesh_terms: D000397:Air Pollution / Q000517:prevention & control; D017402:Chlorofluorocarbons / Q000633:toxicity; D004782:Environmental Health; D006845:Hydrocarbons, Fluorinated / Q000633:toxicity*; D010126:Ozone; D014481:United States; D014484:United States Environmental Protection Agency
chemical_list: D017402:Chlorofluorocarbons; D006845:Hydrocarbons, Fluorinated; D010126:Ozone