Table 2. SPR analysis of CT149 with recombinant HAs.

Subtype	HA donor virus	Kd, M
H1N1	A/California/04/2009*	3.06E-08
	A/Texas/05/2009*	3.38E-08
	A/Solomon Island/03/2006†	3.45E-07
	A/Ohio/07/2009†	5.13E-08
H3N2	A/Philippines/2/1982*	4.56E-11
	A/Brisbane/10/2007‡	1.81E-09
H5N1	A/Vietnam/1203/2004*	2.94E-09
H7N9	A/Anhui/1/2013	1.83E-10

HA, hemagglutinin; SPR, surface plasmon resonance.

^*Immune Technology

^†Sino Biological

^‡IRR