Table 1. Affinity constants (K _a, K _d) of CT302 IgG₁ determined by real-time interaction analysis.

Immobilized HA protein	K D (M)	K a (M-1S-1)	K d (S-1)
A/Brisbane/10/2007	6.06±0.03×10−10	2.93±0.03×105	1.78±0.01×10−4
A/Wisconsin/67/2005	8.55±0.74×10−9	2.91±0.07×105	2.45±0.15×10−3

K _a, association rate constant; K _d, dissociation rate constant; K _D, dissociation equilibrium constant calculated based on K _d/K _a; M, molarity.