Table 3. Monovalent affinity of Fabs measured by surface plasmon resonance against rHA.

mAb	HA	Ka (1/Ms)	Kd (1/s)	KD (M)
CR6261	H1	9.8×105	3.7×10−3	3.8×10−9
	H5	2.7×105	1.1×10−3	4.1×10−9
	H9	6.8×105	3.7×10−3	5.4×10−9
CR6323	H1	1.4×105	5.4×10−4	3.9×10−9
	H5	1.9×105	1.2×10−3	6.3×10−9
	H9	1.3×106	2.7×10−3	2.1×10−9
CR6307	H5	7.0×104	4.5×10−4	6.4×10−9