TABLE 2

Advantage of Auger Electron Emitters in Cytotoxicity of Raji Cells Relative to ¹³¹I

Radionuclide	Ratio of specific toxicity*			Ratio of nonspecific toxicity^†
Radionuclide		L243	1F5	Ratio of nonspecific toxicity^†
¹³¹I	1.00	1.00	1.00
¹²⁵I	0.331	0.226	0.096
¹¹¹In	0.183	0.139	0.248
⁶⁷Ga	0.474	0.316	0.292

↵* (Decays per cell of ¹³¹I required for 2.5 logarithms of cell kill)/(decays per cell of other radionuclide required for same level of kill).
↵^† (Decays per well of ¹³¹I required for 2 logarithms of cell kill)/(decays per well of other radionuclide required for same level of kill).