TABLE 1.

IC₅₀ values for Fabs and MAbs 3/11 and AP33^a

Antibody	IC50 (μg/ml) (IC50 [nM]) for strain
	H77	J6
Fab 3/11	0.43 (8.48)	2.57 (50.65)
MAb 3/11	0.39 (2.6)	1.89 (12.6)
Fab AP33	0.57 (10.98)	0.83 (15.98)
MAb AP33	0.23 (1.53)	1.05 (7)
Control IgG	61.76 (411.73)	107.3 (715.33)

^aIC₅₀, 50% inhibitory concentration.