"D01.268.185.900.500.690" . . . "D01.496.868.690" . "sulphur radioisotope"@en . . . . "sulfur radioisotopes"@en . . "unstable isotopes of sulfur that decay or disintegrate spontaneously emitting radiation"@en . . . . "C0038783" . . . . "sulfur radioisotopes"@en . "sulfur radioisotopes"@en . . "sulfur radioisotope"@en . . "D013462" . "D01.496.749.858" .