title: Coal workers' pneumoconiosis: in vitro study of the chemical composition and particle size as causes of the toxic effects of coal.
mesh_terms: D003031:Coal / Q000032:analysis; D003470:Culture Media; D006801:Humans; D007739:L Cells; D008670:Metals / Q000032:analysis; D010316:Particle Size; D010414:Pennsylvania; D011009:Pneumoconiosis / Q000209:etiology*; D014589:Utah
chemical_list: D003031:Coal; D003470:Culture Media; D008670:Metals