| Aktiva substanser | Betyg | Bibliogr. | Expandera | |
|---|---|---|---|---|
| 1 | Galliumradioisotoper | 100 | + | |
| 2 | Yttriumradioisotoper | 94 | + | |
| 3 | Indiumradiosotoper | 34 | + | |
| 4 | Jodradioisotoper | 32 | + | |
| 5 | Kopparradioisotoper | 29 | + | |
| 6 | Fluorradioisotoper | 21 | + | |
| 7 | Talliumradioisotoper | 4 | + | |
| 8 | Tritium | 4 | + | |
| 9 | Kolradioisotoper | 3 | + |