The toxicity classification of Th-nat and U-nat.
D000398:Air Pollution, Radioactive; D001239:Inhalation; D008452:Maximum Allowable Concentration; D009787:Occupational Medicine; D011832:Radiation Injuries; D013910:Thorium / Q000633:toxicity*; D014501:Uranium / Q000633:toxicity*
D014501:Uranium; D013910:Thorium