Table 5.

SN antibody titers of parent and reverse genetics-derived viruses and mutants^a

Virus	N siteb	SN antibody titer against antiserum
		δ-A	δ-B	δ-C	δ-D	δ-E	ST cell serum
10-0036-2	142	362	362	23,170	11,585	23,170	11
RG 10-0036-2	142	362	362	16,384	11,585	23,170	3
RG 10-0036-2 T144N	144	91	181	91	45	724	23
11-0854-1	144	23	362	181	23	2,896	11
RG 11-0854-1	144	45	181	91	23	2,896	11
RG 11-0854-1 N144T	142	181	362	23,170	23,170	23,170	0

^aMeans for duplicate analyses are shown. “RG” denotes strains derived by reverse genetics.

^bAmino acid position of N-linked glycosylation site.