Table 1.

Synthetic peptides used in this study

No.	Position	Peptide	Source
P1	87–91	INPAN	QH
P2	87–91	ANPAN	HK,AH
P3	87–91	INPVN	XJ
P4	124–129	SSWSDH	QH,XJ,AH
P5	124–129	SSWSSH	HK
Pa	145–163	SSFFRNVVWLIKKNNAYPT	HK
Pb	145–163	SSFFRNVVWLIKKNNAYPT	QH
Pc	145–163	SSFFRNVVWLIKKNNTYPT	XJ
Pd	145–163	PSFFRNVVWLIKKNNTYPT	AH
P6	158–162	NSTYP	Othera
P7	158–162	NNAYP	QH,HK
P8	158–162	NNTYP	XJ,AH
P9	214–219	VPRIAT	Other
P10	214–219	VPKIAT	QH,HK,AH
P11	214–219	VPKLAT	XJ

^aThe most common sequence in other HA strains outside of China