title: Standard quartz dq12 greater than 5 micro m for experimental pneumoconiosis research projects in the Federal Republic of Germany.
mesh_terms: D000818:Animals; D004391:Dust; D005860:Germany, West; D008163:Luminescent Measurements; D008264:Macrophages / Q000187:drug effects; D008854:Microscopy, Electron; D011009:Pneumoconiosis; D051381:Rats; D012106:Research; D012822:Silicon Dioxide / Q000032:analysis / Q000592:standards*
chemical_list: D004391:Dust; D012822:Silicon Dioxide