Table 1.

Changes in amino acid residues in A/equine/Kirgizia/26/1974 (H7N7) hemagglutinin protein compared to consensuses derived from published sequences and London/73.

Isolate	Site B						Site D						Site E		Site C
	164	168	169	198	202	208	182	183	211	220	223	253	67	96	54	277
Prototype-like consensus	S	G	I	T	R	D	K	V	I	Q	V	T	V	V	T	Q
American consensus	N	G	V	A/D	R	N/D	R	E	V	R	A	T/N	I	I	K	Q
London/73	N	G	V	A	R	N	R	E	I	Q	A	T	I	I	K	Q
Kirgizia/74	D	G	V	A	R	N	R	E	I	Q	A	T	I	I	K	Q