Table 1.

Relative binding strength of ErbB2-specific target modules

	NK-92/5B9.z		NK-92/5B9.28.z
Target module	IC50 (nM)a	R2	IC50 (nM)	R2
5FE	3.44	0.9974	2.89	0.9995
5FE2	0.06	0.9931	0.11	0.9934
5FE3	0.04	0.9926	0.08	0.9753
F5E	1.72	0.9969	2.23	0.9956
F5E2	0.13	0.9952	0.19	0.9961
F5E3	0.06	0.9825	0.09	0.9900

^aIC₅₀ and R² values were calculated from the data shown in Fig. 4 by nonlinear regression