title: Ozone and sulfur dioxide effects on the ultrastructure of the chloroplasts of hybrid poplar leaves.
mesh_terms: D002736:Chloroplasts / Q000187:drug effects / Q000648:ultrastructure*; D010126:Ozone / Q000633:toxicity*; D010944:Plants / Q000187:drug effects / Q000648:ultrastructure*; D013458:Sulfur Dioxide / Q000633:toxicity*
chemical_list: D013458:Sulfur Dioxide; D010126:Ozone